# Sig Spear - Guns For Sale

The SIG MCX-SPEAR is a semi-automatic rifle developed from SIG Sauer's submission to the U.S. Army's Next Generation Squad Weapon program. The civilian version is primarily chambered in .277 SIG FURY but accepts 7.62x51mm NATO and 6.5mm Creedmoor through barrel swaps. It uses a non-reciprocating side charging handle, a two-position adjustable gas valve for suppressed and unsuppressed use, a free-floating M-LOK handguard, and a foldable six-position stock. Controls are fully ambidextrous.

## Featured Firearms (13 total)

| Product | Caliber | Price |
|---------|---------|-------|
| [Sig Sauer MCX Spear-LT .300 BLK 9" Pistol - Coyote Tan](https://gunsnation.com/p/sig-sauer-mcx-spear-lt-300-blk-9-pistol-coyote-tan/UCE3nOr1d) | .300 AAC Blackout | - |
| [Sig Sauer MCX Spear LT 5.56 NATO 11.5" Pistol - Coyote Tan](https://gunsnation.com/p/sig-sauer-mcx-spear-lt-5-56-nato-11-5-pistol-coyote-tan/UCE3nOrHb) | 5.56 NATO | - |
| [Sig Sauer MCX Spear-LT Coyote 5.56 NATO Semi-Auto Rifle](https://gunsnation.com/p/sig-sauer-mcx-spear-lt-coyote-5-56-nato-semi-auto-rifle/UCE3nOr28) | 5.56 NATO | - |
| [Sig Sauer MCX Spear LT 7.62x39 11.5" Tactical Pistol FDE](https://gunsnation.com/p/sig-sauer-mcx-spear-lt-7-62x39-11-5-tactical-pistol-fde/UCE3nOr21) | 7.62X39 | - |
| [Sig Sauer MCX Spear .308 WIN Semi-Auto Rifle - FDE, 20-Round](https://gunsnation.com/p/sig-sauer-mcx-spear-308-win-semi-auto-rifle-fde-20-round/UCE3nOuS0) | .308 Win | - |
| [Sig Sauer MCX Spear-LT MultiCam 5.56 NATO 11.5" Pistol](https://gunsnation.com/p/sig-sauer-mcx-spear-lt-multicam-5-56-nato-11-5-pistol/UCE3nOxbX) | 5.56 NATO | - |
| [SIG Sauer MCX Spear Coyote 13" Semi-Auto Rifle 7.62x51 NATO](https://gunsnation.com/p/sig-sauer-mcx-spear-coyote-13-semi-auto-rifle-7-62x51-nato/UCE3nOuS7) | 7.62x51 NATO | - |
| [Sig Sauer MCX Spear 6.8 X 51 - Compact Tactical Semi-Auto Rifle](https://gunsnation.com/p/sig-sauer-mcx-spear-6-8-x-51-compact-tactical-semi-auto-rifle/UCE3nP1Y4) | 6.8 X 51 | - |
| [Sig Sauer MCX SPEAR-LT: Versatile 5.56/.223 Folding Rifle - Black](https://gunsnation.com/p/sig-sauer-mcx-spear-lt-versatile-5-56-223-folding-rifle-black/UCE3nOwsD) | 5.56 NATO | - |
| [Sig Sauer MCX Spear - Coyote, 6.8x51, Semi-Auto Precision Rifle](https://gunsnation.com/p/sig-sauer-mcx-spear-coyote-6-8x51-semi-auto-precision-rifle/UCE3nP20v) | .277 SIG FURY | - |
| [Sig Sauer MCX Spear - 7.62 NATO, 13" Barrel, Coyote Tan](https://gunsnation.com/p/sig-sauer-mcx-spear-7-62-nato-13-barrel-coyote-tan/UCE3nOwMm) | 7.62x51 NATO | - |
| [Sig Sauer MCX SPEAR-LT 7.62x39mm Compact Folding Rifle](https://gunsnation.com/p/sig-sauer-mcx-spear-lt-7-62x39mm-compact-folding-rifle/UCE3nOr2P) | 7.62X39 | - |
| [SIG SAUER MCX Spear-LT .223/5.56 FDE Semi-Auto Rifle](https://gunsnation.com/p/sig-sauer-mcx-spear-lt-223-5-56-fde-semi-auto-rifle/UCE3nP18M) | 5.56 NATO | - |

## Related Tags

- [Concealed Carry](https://gunsnation.com/t/concealed-carry)
- [Home Defense](https://gunsnation.com/t/home-defense)
- [Tactical](https://gunsnation.com/t/tactical)
- [Hunting](https://gunsnation.com/t/hunting)
- [Optic-Ready](https://gunsnation.com/t/optic-ready)
- [Best 9mm Handguns](https://gunsnation.com/t/best-9mm-handguns)
- [Military Classic](https://gunsnation.com/t/military-classic)
- [Match Pistols](https://gunsnation.com/t/match-pistols)

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*Data from [GunsNation](https://gunsnation.com)*