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There are guns that follow trends, and then there is the MCX Spear. When the U.S. Army selected this platform as its M7 Next Generation Squad Weapon in 2022, SIG turned around and built a civilian version, and this SBR configuration is about as close as you can get to the real deal. Chambered in 6.8x51mm, the hybrid-case cartridge developed alongside the rifle, it pushes a 113 grain bullet past 3,000 fps from a 16 inch tube, and the 13 inch barrel here keeps most of that punch in a much handier package.
The 13 inch cold hammer forged barrel wears a 1:7 twist and 5/8×24 threads with a tapered shoulder, capped with a QD flash hider that accepts SIG's SLX and SLH suppressors. The short-stroke gas piston system runs cleaner than direct impingement and features a two-position gas valve you can adjust without tools, so switching between suppressed and unsuppressed shooting is quick work. Controls are fully ambidextrous, and you get both a rear charging handle and a non-reciprocating side charger, which is a real convenience when running an optic with a large eyepiece or working from awkward positions. The SIG two-stage match trigger breaks clean and helps you get the most out of the cartridge's long-range potential.
Modularity is baked into the MCX Spear's DNA. The platform supports caliber conversions to 7.62x51mm and 6.5 Creedmoor, and the free-floating handguard gives you M-LOK real estate plus a full-length Picatinny top rail for optics. The push-button folding Magpul SL-M stock also telescopes, so the whole rifle collapses down for transport or storage. Finished in Coyote anodizing and fed from a 20-round steel AR-10 pattern magazine, it tips the scales at 8.9 pounds with the mag in place. No sights are included, so plan on adding the glass of your choice. For anyone who wants a piece of the most significant U.S. service rifle change in over sixty years, this is it.
It's the semi-automatic civilian version of the M7, which the Army selected in 2022 as part of the Next Generation Squad Weapon program. The core platform, cartridge, and layout carry over, so you're getting the same fundamental design without the select-fire capability. It's about as close as you can get to the issued rifle.
It runs 6.8x51mm, also sold commercially as .277 SIG Fury. SIG produces a family of hybrid-case loads for it, and the cartridge can push a 113 grain bullet over 3,000 fps from a 16 inch barrel. Expect slightly lower velocities from this 13 inch configuration, though it still hits well above typical .308 performance.
Yes, that's one of the platform's biggest draws. The Spear supports caliber conversions between 6.8x51mm, 7.62x51mm, and 6.5 Creedmoor, plus 13 or 16 inch barrel options. That flexibility lets you run cheaper .308 for practice or 6.5 Creedmoor for long-range work on the same rifle.
Very much so. The included QD flash hider serves as the mount for SIG's SLX and SLH suppressors, and the barrel is threaded 5/8×24 with a tapered shoulder if you prefer a direct-thread can. The two-position gas valve adjusts easily so the rifle runs right whether you're suppressed or not.
| UPC | 798681701292 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | RSPEAR6813BNGSBR |
| Action | |
| ATF Type | Short Barrel Rifle |
| Barrel Length | 13" |
| Caliber/Gauge | 6.8x51mm |
| Capacity | 20 + 1 |
| Color | Coyote |
| Length | 35'' |
| Magazine Included | 1 x 20-Round |
| Model | |
| Number of Magazines | 1 20 rd. AR-10 Mag |
| Product Type | NFA – Short Barrel Rifle |
| Safety | Ambidextrous Lever |
| Shipping Weight | 8.9 |
| Sights | No Sights / Optics Ready |
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