Sig Sauer MCX-SPEAR LT 5.56 NATO, 16 in, Coyote, Short-Stroke Piston, Folding Adjustable Stock, 1/2x28 Threaded Barrel
This Sig Sauer MCX-SPEAR LT stands out with a 16-inch cold-hammer-forged carbon-steel barrel, a short-stroke gas system with a 2-position adjustable gas valve, and fully ambidextrous controls including a right-side bolt catch and release. It features a continuous 1913 Picatinny top rail, a free-float M-LOK handguard, and a coyote anodized finish on the aluminum receivers and handguard; the stock uses a coyote polymer body with anodized metal hardware. Made in the United States, it comes set up with flip-up iron sights and useful included accessories.
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: Light, superficial finish scratches and small blemishes are present from prior handling.
What’s Included
- No original factory box included
- 1x 30-round Magpul PMAG with witness window
- Flip-up front and rear iron sights (installed)
- Magpul vertical foregrip
- M-LOK hand stop and rail panel (installed)
The 16-inch barrel is cold hammer forged from carbon steel and threaded 1/2x28, capped with a three-prong flash hider. This setup provides durable construction and ready-to-use muzzle threading in a common pattern.
The MCX-SPEAR LT series uses a short-stroke gas piston with a 2-position adjustable gas valve. Controls are fully ambidextrous, and this configuration includes a right-side bolt catch and release for efficient manipulation from either side.
The rifle wears the LT-pattern free-float aluminum M-LOK handguard with a continuous 1913 Picatinny rail extending from the receiver through the handguard. Flip-up front and rear iron sights are installed for immediate use.
The 1913-interface stock folds to the side, telescopes for length of pull from 10.75 to 13 inches, and includes a rubber buttpad. The coordinated coyote anodized finish covers the aluminum receivers and handguard; the stock body is polymer in matching coyote with anodized metal hardware, providing a uniform appearance. Capacity is 30+1 with STANAG-pattern magazines.