SIG MCX-SPEAR 6.8x51 assault rifle builds SIG MCX-SPEAR 6.8x51 assault rifle
Assault rifles · base ergonomics 46 · base recoil 143/425 · compatible parts 416 types · data as of 2026-11-06
How to read — the three builds below are calculated from part stats. The numbers are the finished weapon ergonomics, vertical recoil, horizontal recoil, weight and parts cost, and the brackets show the difference from the default build. The builder at the bottom recalculates the stats as you swap parts slot by slot. Scopes are personal preference, so they are left out of the recommendations.
Comparison
| Build | Ergonomics | Vertical recoil | Horizontal recoil | Weight | Parts cost | Traders only (ergo / vertical recoil · cost) |
|---|---|---|---|---|---|---|
| Default build | 46.5 | 77 | 230 | 4.21kg | — | — |
| Lowest recoil | 49.5 (+3) | 68 (−9) | 202 (−28) | 3.88kg | 173,660₽ | 49.5 / 68 · 175,386₽ |
| Balanced | 77 (+30.5) | 76 (−1) | 227 (−3) | 3.01kg | 127,537₽ | 77 / 76 · 129,263₽ |
| Max ergonomics | 94.8 (+48.3) | 96 (+19) | 284 (+54) | 3.15kg | 76,796₽ | 94.8 / 96 · 78,523₽ |
Lowest recoil Ergonomics 49.5 · vertical recoil 68 · recoil −52.5%
The combination that cuts recoil the most. Ergonomics only breaks ties. Parts cost 173,660₽ (cheaper of flea market and traders; parts included with the gun count as 0₽).
| slots | Part | Ergonomics | Recoil | Where to buy | Price |
|---|---|---|---|---|---|
| Pistol Grip |  AR-15 Naroh Arms GRAL-S pistol grip | +5 | −1.5% | Skier LL3 | 18,738₽ |
| Magazine |  AR-10 7.62x51 Magpul PMAG 20 SR-LR GEN M3 20-round magazine | −1 | 0 | Peacekeeper LL4 | 6,645₽ |
| Receiver |  MCX-SPEAR 6.8x51 upper receiver | +5 | −1% | Included | 0₽ |
| Scope |  Geissele Super Precision 30mm ring scope mount | +0.5 | 0 | Skier LL4 | 18,000₽ |
| Mount |  Geissele Super Precision top ring cap | +0.5 | 0 | Skier LL4 | 2,160₽ |
| Barrel |  MCX-SPEAR 6.8x51 13 inch barrel | −13 | −6% | Included | 0₽ |
| Muzzle |  Lantac BMD Blast Mitigation Device A3 direct thread adapter | +4 | −1% | Peacekeeper LL3 | 5,607₽ |
| Muzzle |  AR-10 Lantac Dragon 7.62x51 muzzle brake | −5 | −10.5% | Peacekeeper LL3 | 20,187₽ |
| Muzzle |  Lantac BMD 7.62x51 Blast Mitigation Device | −4 | −1% | Peacekeeper LL3 | 9,065₽ |
| Gas Block |  MCX-SPEAR Adjustable Gas Piston | −1 | −3% | Included | 0₽ |
| Handguard |  MCX-SPEAR 11 inch M-LOK handguard | +16 | 0 | Included | 0₽ |
| Front Sight |  Type 20 flip-up front sight | +0.5 | 0 | Flea Market | 2,200₽ |
| Foregrip |  BCM GUNFIGHTER MOD 3 M-LOK foregrip (Black) | −2 | −3.5% | Mechanic LL3 | 25,625₽ |
| Rear Sight |  Type 20 flip-up rear sight | +0.5 | 0 | Peacekeeper LL3 | 3,365₽ |
| Stock |  SIG Sauer Folding Knuckle Stock Adapter | −2 | 0 | Peacekeeper LL3 | 6,089₽ |
| Stock |  AR-15 Magpul Enhanced Receiver Extension | −1.5 | −1% | Peacekeeper LL2 | 6,783₽ |
| Stock |  AR-15 Magpul PRS GEN3 stock (Black) | +1 | −24% | Peacekeeper LL3 · quest unlock | 49,196₽ |
| Ch. Handle |  MCX-SPEAR charging handle | 0 | 0 | Included | 0₽ |
Same build with trader cash purchases only.
Balanced Ergonomics 77 · vertical recoil 76 · recoil −46.7%
Keeps ergonomics at or above the default build (at least 60) while cutting recoil the most. Parts cost 127,537₽ (cheaper of flea market and traders; parts included with the gun count as 0₽).
| slots | Part | Ergonomics | Recoil | Where to buy | Price |
|---|---|---|---|---|---|
| Pistol Grip |  AR-15 Magpul MIAD pistol grip (FDE) | +6 | −1.2% | Peacekeeper LL2 | 11,027₽ |
| Magazine | AR-10 7.62x51 Magpul PMAG 20 SR-LR GEN M3 20-round magazine | −1 | 0 | Peacekeeper LL4 | 6,645₽ |
| Receiver | MCX-SPEAR 6.8x51 upper receiver | +5 | −1% | Included | 0₽ |
| Scope | Geissele Super Precision 30mm ring scope mount | +0.5 | 0 | Skier LL4 | 18,000₽ |
| Mount | Geissele Super Precision top ring cap | +0.5 | 0 | Skier LL4 | 2,160₽ |
| Barrel | MCX-SPEAR 6.8x51 13 inch barrel | −13 | −6% | Included | 0₽ |
| Muzzle | Lantac BMD Blast Mitigation Device A3 direct thread adapter | +4 | −1% | Peacekeeper LL3 | 5,607₽ |
| Muzzle | AR-10 Lantac Dragon 7.62x51 muzzle brake | −5 | −10.5% | Peacekeeper LL3 | 20,187₽ |
| Gas Block | MCX-SPEAR Adjustable Gas Piston | −1 | −3% | Included | 0₽ |
| Handguard | MCX-SPEAR 11 inch M-LOK handguard | +16 | 0 | Included | 0₽ |
| Front Sight | Type 20 flip-up front sight | +0.5 | 0 | Flea Market | 2,200₽ |
| Foregrip |  Daniel Defense Enhanced M-LOK Vertical Foregrip (Coyote Brown) | +6 | −2% | Peacekeeper LL4 | 23,365₽ |
| Rear Sight | Type 20 flip-up rear sight | +0.5 | 0 | Peacekeeper LL3 | 3,365₽ |
| Stock |  Magpul UCS buttstock (Black) | +10 | −22% | Mechanic LL4 | 28,389₽ |
| Stock |  Magpul UCS Stock Cheek Riser | +2 | 0 | Mechanic LL4 | 6,592₽ |
| Ch. Handle | MCX-SPEAR charging handle | 0 | 0 | Included | 0₽ |
Same build with trader cash purchases only.
Max ergonomics Ergonomics 94.8 · vertical recoil 96 · recoil −33.2%
Ergonomics as high as it goes (up to 100), with the least recoil among those builds. Parts cost 76,796₽ (cheaper of flea market and traders; parts included with the gun count as 0₽).
| slots | Part | Ergonomics | Recoil | Where to buy | Price |
|---|---|---|---|---|---|
| Pistol Grip | AR-15 Magpul MIAD pistol grip (FDE) | +6 | −1.2% | Peacekeeper LL2 | 11,027₽ |
| Magazine | AR-10 7.62x51 Magpul PMAG 20 SR-LR GEN M3 20-round magazine | −1 | 0 | Peacekeeper LL4 | 6,645₽ |
| Receiver | MCX-SPEAR 6.8x51 upper receiver | +5 | −1% | Included | 0₽ |
| Scope |  Axion Kobra EKP-8-18 reflex sight | −2 | 0 | Jaeger LL1 | 16,061₽ |
| Tactical |  Axion Kobra sight shade | +3 | 0 | Flea Market | 135₽ |
| Barrel | MCX-SPEAR 6.8x51 13 inch barrel | −13 | −6% | Included | 0₽ |
| Muzzle |  SIG Sauer Taper-LOK 7.62x51/.300 BLK muzzle adapter | 0 | 0 | Skier LL3 | 6,092₽ |
| Muzzle |  SIG Sauer 7.62x51 3-prong flash hider | 0 | −4% | Peacekeeper LL3 | 3,440₽ |
| Gas Block | MCX-SPEAR Adjustable Gas Piston | −1 | −3% | Included | 0₽ |
| Handguard | MCX-SPEAR 11 inch M-LOK handguard | +16 | 0 | Included | 0₽ |
| Front Sight | Type 20 flip-up front sight | +0.5 | 0 | Flea Market | 2,200₽ |
| Foregrip |  Magpul M-LOK 4.1 inch rail | −0.2 | 0 | Mechanic LL1 | 1,947₽ |
| Foregrip |  Strike Industries Cobra Tactical foregrip (FDE) | +12 | 0 | Mechanic LL3 | 20,577₽ |
| Rear Sight | Type 20 flip-up rear sight | +0.5 | 0 | Peacekeeper LL3 | 3,365₽ |
| Stock |  SIG Sauer Collapsing/Telescoping Stock | +23 | −18% | Peacekeeper LL1 | 5,307₽ |
| Ch. Handle | MCX-SPEAR charging handle | 0 | 0 | Included | 0₽ |
Same build with trader cash purchases only.
Build it yourself compatible parts per slot · stat calculator
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Shopping list
Parts in each dropdown are sorted by the current goal (the last build you picked). Changing a slot clears the slots under it and only required slots are refilled automatically. Your build is saved in this browser.
Slots on the weapon itself 5
- Pistol Grip 37 items · required
- Magazine 6 items
- Receiver 1 items · required
- Stock 10 items
- Ch. Handle 1 items · required
How it is calculated — ergonomics = weapon base + sum of part values; recoil = weapon base recoil × (1 + sum of part recoil modifiers). This formula matches the stats of all 163 default builds on tarkov.dev within ±1. Ammo recoil modifiers, weapon mastery and overweight penalties are not included (ammo: see the Ammo table). Ergonomics above 100 gets no extra credit in the recommendations. Conflicting parts are avoided, but some slot-position conflicts are missing from the data and may still be blocked in game. Prices are the flea market 24h average (PvP) and trader cash prices; barters are not included.
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