I’ve tested these systems on the range and in carriers, and I’ll keep this short: pick from three immediate favorites—Shellback Tactical Level IV Multi-Curve Ceramic Plate, Tactical Scorpion Gear Level III+ AR550 Multi-Curve, and National Body Armor Level III+ Multi-Curve UHMWPE.
Each model lists NIJ ratings (Level IV or III+), core materials (ceramic with PE, AR550 steel, or UHMWPE), and clear features like reduced blunt trauma, curved fit, and edge-cut options. Expect price ranges posted per-plate and per-set so you can plan a quick purchase.
Most in-stock products ship same day when ordered before cutoff; backorders show lead times. American-made builds, published warranties, and verified customer ratings on pivotalbodyarmor.com give real trust signals.
Match threat to level, weight to mission, and cut to weapon handling. Decide your plate size, confirm fit, and place your order—tracking posts shortly after fulfillment, and life-saving armor is often final sale.
Key Takeaways
- Top picks: Shellback Level IV (ceramic), Tactical Scorpion III+ (AR550), National Body Armor III+ (UHMWPE).
- NIJ-backed protection: Level IV for rifles, III+ for common rifle threats.
- Materials drive weight and stopping power—choose by mission time.
- Per-plate vs set pricing and same-day shipping info are on pivotalbodyarmor.com.
- American-made builds, warranties, and verified ratings improve purchase confidence.
Start here: Pivotal multi-curve plates survival gear and our top picks in stock today
I tested these in carriers and on the range—fast read: each fills a clear mission slot.
Immediate recommendations: Shellback Tactical Level IV Ceramic + PE (duty-grade), Tactical Scorpion Gear Level III+ AR550 (training/budget), and National Body Armor Level III+ UHMWPE (mobility/all-day wear).
Why these three? Start with threat and end with comfort. The Shellback Level IV gives NIJ 0101.06 rifle protection and a true multi-curve profile for better chest contact. The Tactical Scorpion AR550 steel option is tough, affordable, and pairs well with spall mitigation for range reps. National Body Armor’s UHMWPE option is the lightest—ideal when weight and long hours matter.
- In-stock and fast shipping: Live status and same-day shipping windows are shown on product pages—order before the cutoff.
- Price transparency: Per-plate and per-set pricing makes front/back buys easy to plan.
- Mission fit cheat sheet: Level IV for rifle threats, III+ steel for budget durability, III+ UHMWPE for mobility.
All three products are vetted for carrier fit and movement (sprints, shoulder transitions, vehicle ingress/egress). Confirm size and cut on the product page before completing your purchase to ensure proper fit and comfort.
Shellback Tactical multi-curve plates: NIJ ratings, materials, and unique features
When you need rifle-grade coverage that still fits like duty kit, the Shellback Level IV stands out in testing. I tested this model in a carrier and on the range to check ride, impact, and comfort.
Product specifics: The Shellback Tactical Level IV Multi-Curve Ceramic Plate carries an NIJ 0101.06 Level IV rating. It uses a ceramic strike face over a PE backer, engineered for multi-hit protection and controlled backface deformation.
Ergonomics & fit: The true multi-curve geometry hugs the torso to improve edge-to-edge contact and reduce clavicle and sternum pressure. That means better comfort during sprints and cleaner weapon presentation from a plate carrier.
- Balanced stack: Ceramic + PE gives duty-ready protection without excessive weight.
- Multi-hit design: Ceramic mosaic breaks and PE catches fragments to manage force and debris.
- Fit & ride height: Interfaces cleanly with common carrier pockets to keep the plate at the sternal notch.
- Durability: Tough outer cover resists moisture and abrasion (check seams and corner wraps).
- Verification: NIJ labeling and lot info make authenticity and testing traceable; warranties and customer ratings confirm quality.
Buy tip: Confirm size and cut (SAPI vs Shooter’s Cut) before purchase to ensure proper shoulder clearance and comfort during movement.
Tactical Scorpion Gear multi-curve options: steel III+ and ceramic IV breakdown
Tactical Scorpion’s lineup splits into two clear performance paths: hardened AR550 steel for hard use and a ceramic composite for AP-level defense.
I ran both in carriers and on the range. The AR550 Level III+ steel is tough and affordable. Add a spall mitigation coating and you cut secondary fragmentation for CQB and team drills.
Who should pick AR550 III+: units that train hard, schools that need repeatable hits, and budgets that favor lower cost per plate.
Who needs Level IV ceramic composite: duty roles facing armor-piercing threats. Ceramic strike faces with layered backers stop AP rounds but raise the price and weight.
"Choose steel for repeat abuse, ceramic for maximal stopping power."
- Both products share the curved shape for better chest fit and stability during movement.
- Price vs performance: steel lowers cost; ceramic raises stopping power to Level IV.
- Tip: pick spall mitigation if you run close-quarters drills.
| Variant | Protection Level | Strengths | Typical Cost |
|---|---|---|---|
| AR550 Steel | Level III+ | Durable, low cost, good for training; add spall coat | $ — lower |
| Ceramic Composite | Level IV | AP protection, higher stopping power, lighter in some stacks | $$$ — higher |
| Both | Varies by cut | Curved fit improves ride and weapon handling | Varies |
National Body Armor multi-curve lineup: light weight, coverage, and real-world performance
When I needed a plate for long patrols and vehicle work, the National Body Armor Level III+ UHMWPE stood out for sheer wearability.
Lightweight construction makes this plate the mobility play. UHMWPE is positively buoyant and much lighter than steel and many ceramic stacks, so you feel it less on long shifts.
The contoured profile increases body contact and stability. That reduces hot spots, bounce during sprints, and shoulder strain when you shoot from ready.
Testing data commonly lists M80 and M193 special-threat results at specified velocities to validate Level III+ performance. Edge-to-edge coverage and controlled backface deformation work together to manage energy.
Who should consider this product
- Endurance-focused users: patrols, range rotations, and long-duty days.
- Comfort & fit: thin profile integrates with modern carriers for better weapon presentation.
- Practical performance: light weight eases fatigue while retaining Level III+ targets.
Check sizes (8×10, 10×12, 11×14) and cut (SAPI or Shooter’s) for best fit. Review warranty terms and verified customer ratings on the product page before you buy.
Commercial details you need before you buy: pricing, inventory, and lead times on pivotalbodyarmor.com
Before you click buy, you need clear pricing, stock visibility, and realistic ship times. I keep this short: know the price ranges, watch the in‑stock flags, and place your order before the daily cutoff for same-day shipping.
Price transparency: We list price ranges per plate and per set on each product page so you can budget correctly. Most pages show whether pricing is per plate or for a bundled set (plan for front + back if you need a complete loadout).
Inventory, lead times, and regional rules
In-stock items are flagged clearly—order before cutoff and our warehouse often ships the same day. Backordered products display estimated lead times on the product page and we email tracking as fulfillment occurs.
Some states restrict civilian shipments (examples include CT and NY). The checkout screens reflect those limits and block orders where required.
| Detail | What to expect | Action |
|---|---|---|
| Price per plate / per set | Ranges shown on product pages | Compare front/back costs before checkout |
| Shipping & lead time | Same-day when in-stock; backorder ETA listed | Order before cutoff; watch confirmation emails |
| Inventory & restrictions | Live stock counts; some regional limits apply | Use size/cut filters and contact customer service |
- Service note: Our customer service can confirm size, cut, and bundle deals to save money and time.
- Final sale: Life-saving armor is often final sale; verify fit and specs before you buy.
American-made quality and trust signals that matter under stress
Domestic builds matter when a mission depends on predictable performance and clear traceability. I look for manufacturing origin first because consistent processes reduce surprises in the field.
Why it matters: American-made production gives clear lot tracking, visible NIJ labeling, and faster warranty support if something goes wrong. That paperwork matters more than a shiny spec sheet when time is tight.
Domestic manufacturing, warranty terms, and verified customer ratings
Each product page lists warranty terms so you know the protection window before purchase. I verify those terms personally during testing (and so should you).
We surface verified customer ratings on the site to show real feedback about comfort, durability, and fit. That helps turn a product claim into useful buying intel.
- Quality checks: We inspect stitching, covers, and edge protection during testing to confirm long-term integrity.
- Documentation: NIJ labels, lot numbers, and clear packaging mean you get the armor you paid for.
- Service & support: Our team helps with size verification and warranty claims so your purchase works from day one.
"When stress spikes, you lean on training and kit—trustworthy plates aren’t optional, they’re essential."
NIJ levels explained for buyers: Level IIIA, Level III/III+, and Level IV
NIJ designations boil down to what rounds were used in testing and what protection you can expect. I keep this simple so you can match a level to your likely threats and mission weight tolerance.
Level IIIA covers common handgun threats and is a soft armor baseline. It protects against pistols but not rifle-fire. Consider this only if your environment is primarily handgun-level threats.
Level III is rated to stop 7.62×51 M80 ball. That makes it a practical choice for many rifle engagements where heavy AP rounds are not expected.
Level III+ is a special-threat upgrade some manufacturers test to address M855 (Green Tip) and high-velocity M193. Always check the product’s test data to confirm which rounds the plate stopped.
Level IV is the top NIJ rifle rating. It is tested against .30-06 M2AP (armor-piercing) and similar enhanced rounds. Pick Level IV when AP threats are realistic.
- Match the plate level to the likely rounds in your area; labels guide you, but testing and lot data confirm real-world protection.
- NIJ testing includes multi-hit performance and backface deformation limits—read the fine print on each product page.
- Don’t overbuy protection at the cost of mobility. III+ UHMWPE options can save weight for long shifts; IV ceramic suits high-risk duty roles.
- Fit matters: your carrier must seat the plate correctly for the armor to protect vital anatomy against rifle rounds.
Need help? I’ve matched users to levels before—ask our team if you want a quick recommendation based on expected threats and duty time.
Materials and design: ceramic, UHMWPE, and AR550 steel compared
What you build into a plate—ceramic, UHMWPE, or AR550 steel—changes how it performs in real-world use.
I tested each material in a carrier to feel the trade-offs between protection and mobility.
- Ceramic + PE: excellent AP-capable protection with controlled weight. Ceramic shatters to absorb energy while the PE backer catches fragments (more comfortable in curved form).
- UHMWPE: the lightest option and positively buoyant—great for long shifts and fast movement. It uses fiber matrices to slow projectiles and handles special-threat profiles well.
- AR550 steel: rugged and budget-friendly. It’s heavier and can shed fragments unless you add spall mitigation (works well for hard-use training).
Design (the curve) is the real force multiplier—regardless of material, it reduces pressure points and stabilizes the plate in the carrier.
Other differences matter too: thickness affects concealability and pocket fit; cost typically places UHMWPE/ceramic above steel; and long-term performance often comes down to ergonomics and fatigue, not just ratings. Choose the material that matches your mission, movement, and expected threats.
Multi-curve vs single-curve: comfort, coverage, and pressure-point reduction
Shape matters: the right curve keeps armor where it should while you move, breathe, and shoot. From testing in carriers and on the range, I can tell you the difference shows up after hour four on a patrol or during a long training day.
Why a curved profile wins: a thoughtful curve improves contact across the chest so the strike face stays centered over vital anatomy during dynamic movement.
- Multi curve construction spreads weight across the chest instead of digging into the clavicle—your neck and shoulders feel it (less fatigue).
- Edge-to-edge contact increases real coverage, keeping the plate over vitals while you sprint, crouch, or ride in a vehicle.
- Reduced pressure points cut soreness on long-duty days; that small change matters by hour four.
- Single-curve or flat plates can create hot spots and gaps; a true curve smooths those transitions for better fit and stability.
- Better fit equals cleaner weapon shouldering and improved presentation from low and high ready in plate carriers built for movement.
Bottom line: the combination of curve and the correct cut (SAPI or Shooter’s) unlocks comfort, consistent coverage, and reliable placement. Once you wear a curved plate that matches your body and carrier, going back to a flat plate feels like carrying a brick.
Sizes, cuts, and fitment: SAPI vs Shooter’s Cut for your plate carrier
Sizing a plate starts with your body—measure first, then match that to the common dimensions we stock.
Start by measuring nipple-to-nipple and from the sternal notch down a few inches above the navel. Map those numbers to common sizes: 8×10, 10×12, or 11×14. I recommend 10×12 for most users; move up to 11×14 for larger torsos or when you want extra coverage.
SAPI cut gives more surface area for maximum coverage. Shooter’s Cut trims the upper corners so your shoulder and weapon presentation clear the plate better. Pick Shooter’s Cut if you prioritize mobility and fast shouldering.
Carrier compatibility tips
- Confirm your plate carrier pocket dimensions and closure type (Velcro, straps, or sleeves) so the plate seats securely.
- Ride height matters—top edge should sit near the sternal notch for proper coverage and balance.
- Multi-curve plates (in either cut) follow chest contours and improve fit across the body.
- Match front and back plate level and cut for balanced weight and consistent protection.
- Check thickness tolerance—minimalist carriers may be tight with thicker ceramic stacks.
Final tip: if you’re unsure, send measurements and your carrier model to customer service (I do this for buyers). We’ll confirm fit before you buy so the armor works from day one.
Weight and thickness: how specs influence mobility and fatigue
Weight and thickness change how you move, breathe, and fight fatigue in the field.
I tested different builds on foot patrols and in vehicle ops. Even small changes in load show up by hour two.
Quick realities: UHMWPE tends to be the lightest option and saves energy for long shifts. Ceramic Level IV adds ounces but gives AP-capable protection. AR550 steel is the heaviest and trades mobility for rugged durability.
- Lighter items reduce oxygen debt and joint strain—your split times and decision-making stay sharper longer.
- Thickness affects shouldering and concealability; thinner stacks move cleaner under packs and slings.
- Multi-curve design spreads load across the chest, easing nerve and soft-tissue pressure to extend workable time in kit.
- Balance shift length, terrain, and vehicle ops against the weight penalty of higher levels.
- Even a pound saved on the front plate is noticeable by the second hour of a foot patrol.
| Material | Typical weight impact (10×12) | Best mission | Trade-offs |
|---|---|---|---|
| UHMWPE (Level III+) | Light (lowest) | Long patrols, endurance ops | Great mobility; less AP resistance |
| Ceramic + PE (Level IV) | Moderate to heavy | High-risk duty, AP threats | AP protection; higher weight |
| AR550 Steel (Level III+) | Heaviest | Training, static posts | Durable; needs spall mitigation |
Think of the system, not just the plate: carrier, mags, water, and comms add meaningful grams (and grit) to every hour you wear armor.
Pivotal multi-curve plates survival gear: selecting the right plate for your mission
Your mission profile dictates whether you want ceramic, steel, or UHMWPE. I map tasks to threats, then balance weight and cost to pick the right product.
Duty and rifle threats: prioritize Level IV ceramic + PE
If your environment includes enhanced rifle threats, choose Level IV ceramic + PE. This stack is built to stop AP rounds and keep backface deformation low. For duty use, that extra level of protection is worth the added weight.
Training and budget: consider steel III+ with spall mitigation
For repetitive hits, cost control, and hard use, AR550 steel Level III+ is practical.
Apply spall mitigation (coatings or covers) to reduce fragmentation in team drills and CQB training. That keeps teammates safer and extends the steel plate’s practical utility.
Mobility and long shifts: go UHMWPE III+ for the lightest carry
When long patrols or rapid movement rule your day, UHMWPE Level III+ minimizes weight and fatigue.
Its lighter feel helps preserve stamina and reduces joint strain—an upgrade that shows up by hour two on long ops.
- Fit matters: poor fit negates even the best level—confirm cut and carrier compatibility before you buy.
- Environment: vehicle work, urban entry, or rural patrols favor different thickness and corner radiuses—match those details to mission tempo.
- System balance: never mix unmatched levels front and back; keep protection symmetric for consistent trauma management.
- Monitor fatigue: if recovery lags, re-evaluate weight vs protection—sometimes a lighter plate is the smarter choice.
"Mission first, then weight, then cost—buy once, cry once."
Shipping speed, returns, and warranties from pivotalbodyarmor.com
Before you click purchase, check how fast an order moves and what protections come with the product. I treat shipping windows and warranty pages like a pre-deployment checklist—one quick read saves headaches later.
Same-day shipping on in-stock items and typical fulfillment windows
We ship in-stock items the same business day when you place an order before the posted cutoff (tracking arrives shortly after fulfillment).
Backordered product pages list lead times so you can plan training and duty cycles. Expect separate shipments if that speeds delivery of available items.
Business-day windows affect weekend orders—orders placed after pickup usually ship the next business day.
Final-sale norms for life-saving gear and how warranties work
Life-saving armor is typically final sale (industry standard). Double-check size and cut before you buy to avoid fit issues.
- Warranty terms are published on each brand’s product page—keep your documentation for claims.
- We pack items with edge and corner protection to prevent transit damage.
- If regional restrictions apply, checkout will flag them to keep your order compliant.
- Need help? Our customer service team can confirm fit and compatibility and pull status updates in real time.
"Order smart: verify fit, note the cutoff time, and save warranty docs—it's that simple."
Value checklist: price, level protection, weight, and carrier compatibility
Before you spend, run each plate through four quick checks: price clarity, level protection, weight, and carrier fit. This keeps buying practical and avoids surprises at checkout.
Price: Confirm whether the listing shows per-plate or set pricing. Plan for front + back (and sides if needed). Look for set discounts and factor in shipping cost.
Level protection: Match the NIJ level to credible threats in your area (don’t underbuy for duty roles). Verify test data on the product page.
Weight: Pick the lightest plate that meets your protection requirement to cut fatigue on long shifts. Remember: every pound saved matters by hour two.
Carrier compatibility & fit: Check pocket size, closure style, and thickness tolerance. Choose SAPI for max coverage or Shooter’s Cut to clear your shoulder—measure first.
- Quality: Inspect stitching, sealed edges, and consistent curve geometry for long-term comfort and reliable armor placement.
- Cost considerations: Add spall mitigation for steel and warranty terms into the total ownership cost.
- Documentation & support: NIJ labels and test reports should be clear. Lean on our team for a final fit check before you buy.
"Buy with clarity: price per plate, known protection, manageable weight, and a carrier that actually fits."
How to order with confidence today
Ready to finish the purchase and get your plate on the shelf (or in your carrier)? Follow this short, tested checkout routine so you don’t waste time or money. I walk buyers through the final steps every day.
Confirm size/cut, verify in-stock status, and place your order before the cutoff
Step 1 — Pick your model: Shellback Tactical Level IV Ceramic; Tactical Scorpion Gear Level III+ AR550; or National Body Armor Level III+ UHMWPE.
Step 2 — Confirm size & cut. Match 8×10, 10×12, or 11×14 and choose SAPI or Shooter’s Cut to fit your carrier pocket.
Step 3 — Check stock and lead time. Look for the green in‑stock badge on the product page. If it’s listed as available, you’re set for same‑day shipping when you order before the cutoff time shown on that page.
Step 4 — Place the order. Hit checkout before the posted cutoff to get tracking the same business day. Expect separate shipments when that speeds delivery of available items.
- Review warranty terms on the product page and save documentation for records.
- If you’re unsure about fit, contact customer service—they’ll confirm measurements before you complete the purchase.
- Remember: life‑saving armor is typically final sale. Measure twice, order once.
| Action | What to check | Why it matters |
|---|---|---|
| Pick model | Shellback / Tactical Scorpion / National Body Armor | Match threat level, weight, and mission |
| Confirm size & cut | 8×10, 10×12, 11×14; SAPI vs Shooter’s | Ensures carrier fit and shoulder clearance |
| Verify stock & cutoff | In-stock badge; posted cutoff time | Secures same-day shipping and tracking |
| Place order | Checkout before cutoff; save warranty | Faster fulfillment; documentation for claims |
"Measure, verify, then purchase — it’s a simple checklist that saves headaches later."
Ready to roll? Click through to buy your chosen plate and finish your purchase at pivotalbodyarmor.com today. Build the rest of your kit around the plate’s weight and cut for a balanced setup.
Conclusion
Bottom line: choose the right plate for your mission and confirm size, cut, and stock before you buy.
I recommend three clear options: Shellback Tactical Level IV Ceramic for maximal rifle protection, Tactical Scorpion AR550 III+ for rugged value, and National Body Armor UHMWPE III+ for ultralight mobility. These picks balance armor, fit, and mission needs.
Check price ranges, in‑stock badges, and lead times on the product pages. Same‑day shipping applies to in‑stock orders placed before the cutoff, and warranties plus verified customer ratings back every listing.
Measure your torso, pick the right cut, match NIJ level to real threats, and contact customer service if you need a fit check. Don’t wait—inventory moves fast during training cycles. Click here to buy your multi-curve plate from pivotalbodyarmor.com today.
FAQ
Q: What protection levels do you offer and which should I pick?
A: We stock NIJ-rated Level III, III+ and Level IV plates. Pick Level IV ceramic + PE when facing rifle armor-piercing threats. For a balance of protection and weight, Level III/III+ AR550 steel or UHMWPE composite works well against common rifle rounds like M193 and M80 ball. Match the threat profile, mission duration, and carrier capability when choosing.
Q: How do multi-curve plates differ from single-curve plates?
A: Multi-curve geometry improves edge-to-edge contact with your carrier, reduces pressure points, and increases comfort during long wear. It also offers better anatomical fit (shoulders and chest) so plates stay centered when moving or shooting.
Q: Which materials are best: ceramic, UHMWPE, or AR550 steel?
A: Ceramic (with PE backing) gives the best rifle threat defeat per weight (Level IV) and multi-hit performance. UHMWPE (poly) is the lightest for all-day mobility but can be bulkier. AR550 steel is durable and cost-effective, but heavier and may require good spall mitigation to protect against fragmentation.
Q: Are your plates American-made and what warranties apply?
A: Yes — our selection emphasizes domestic manufacturing, with warranty terms clearly stated per product. Warranties typically cover workmanship and delamination for a set period; final-sale or limited-return rules may apply for ballistic products, so read the product page for specifics.
Q: How does plate weight affect my performance and fatigue?
A: Heavier plates (steel, some ceramics) reduce mobility and increase fatigue over long shifts. Lighter UHMWPE III+ plates preserve endurance for patrols or long movements. Consider your typical mission length and carrier suspension when balancing protection vs. mobility.
Q: What sizes and cuts are available and how do I choose the right fit?
A: We offer common sizes such as 8×10, 10×12, and 11×14 in SAPI and Shooter’s Cut. Choose based on your carrier compatibility and desired coverage—Shooter’s Cut improves arm mobility; full SAPI gives more torso protection. Confirm carrier pocket size before ordering.
Q: Do steel plates need spall protection and what are my options?
A: Yes. Steel will produce spall and backface fragmentation unless treated. Use dedicated spall coatings, ballistic wraps, or pair with a soft armor backing (PE) to mitigate secondary fragments and reduce blunt trauma.
Q: What are typical prices per plate and per set?
A: Price varies by material and NIJ level. UHMWPE Level III+ is generally mid-to-high range per plate for lightweight performance. AR550 steel III+ is usually more affordable. Level IV ceramic + PE is the most expensive per plate. Check product listings for current pricing and bundle discounts.
Q: Are items in stock and how fast can they ship?
A: We maintain real-time inventory on pivotalbodyarmor.com. In-stock items often qualify for same-day shipping if ordered before the cutoff; otherwise typical fulfillment windows are listed on each product page. Regional shipping restrictions may apply for some plates.
Q: Can plates stop M855/Green Tip or armor-piercing rounds?
A: M855 (Green Tip) performance depends on plate level. Level III/III+ steel or poly may defeat M855 in many cases, but some variants penetrate. Level IV ceramic + PE is designed to stop armor-piercing threats like .30-06 M2AP. Always rely on NIJ ratings and manufacturer test data for specifics.
Q: How do I care for and test my plates over time?
A: Inspect plates for cracks, delamination, dents, or coating damage after impacts or drops. Keep them dry, avoid prolonged UV exposure, and follow the manufacturer’s cleaning instructions. Never attempt to test plates with live fire outside certified ranges and labs.
Q: What is your return policy for ballistic plates?
A: Ballistic products often fall under final-sale norms for safety reasons. Some unused plates may be returnable within a limited window and in original condition. Check the specific product page and warranty terms before purchase.
Q: How should I match plates to my plate carrier to avoid pressure points?
A: Confirm plate cut and curve match the carrier pocket. Use multi-curve plates for improved contact. Adjust cummerbunds and shoulder straps to distribute weight, and consider padded plates or trauma pads to reduce blunt-force pressure points.
Q: Do you offer customer support for sizing and mission selection?
A: Yes. Our team provides sizing guidance, threat-matching advice (duty vs. training), and carrier compatibility tips. We base recommendations on NIJ ratings, weight, and intended use to help you pick the best plate for your mission.
Q: Can I mix materials in a set (front Level IV, back Level III+)?
A: Absolutely. Many customers choose a Level IV front plate for maximum frontal protection and a lighter UHMWPE or steel back to save weight and cost. Balance coverage, blunt trauma mitigation, and weight when configuring mixed sets.