Sig Sauer MCX-SPEAR 7.62 NATO (7.62x51) Semi-Auto Rifle, 16 Inch Barrel, Coyote/Tan, Ambidextrous Controls, Folding Telescoping Stock
The MCX-SPEAR stands out as a recent Sig Sauer release that brings the platform’s multi-caliber MCX lineage to a 7.62 NATO, 16-inch configuration. This commercial analogue to the U.S. Army’s M7 rifle lineage pairs a short-stroke gas piston system and two-position adjustable gas valve with dual charging options and fully ambidextrous controls. It features a uniform coyote/tan finish, a free-float M-LOK handguard with a continuous top Picatinny rail, and compatibility with SR-25/LR-308 pattern magazines. Mfg.
part number RSPEAR-762-16B.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are a couple of small scuffs on the handguard and the side charging handle; otherwise, the rifle presents very well.
What’s Included
- Sig Sauer MCX-SPEAR 7.62 NATO rifle
- 1 Magpul PMAG LR/SR GEN M3 10-round polymer magazine (7.62x51 pattern)
This MCX-SPEAR is chambered in 7.62 NATO (7.62x51) with a 16-inch barrel, 1:10 twist, rotating bolt, and a short-stroke gas piston system. A two-position adjustable gas valve (normal/suppressed) allows quick tuning for ammunition and conditions. The barrel is capped with a 3-prong flash hider and is marked "7.62 NATO" and "NATO 1/10."
Controls and handling are emphasized with a dual charging setup: a left-side non-reciprocating charging handle plus a traditional rear charging handle. The rifle includes ambidextrous safety, bolt catch/release, and magazine release. Capacity is 10+1, and it accepts widely available SR-25/LR-308 pattern magazines.
The free-float aluminum M-LOK handguard with a continuous top Picatinny rail provides a rigid, lightweight interface for accessories. The alloy receiver carries a uniform coyote/tan finish and is marked "SIGMCX-SPEAR MULTI-CALIBER" and "SIG SAUER INC, NEWINGTON, NH USA."