SIG SAUER MCX SPEAR LT semi-automatic rifle chambered in 5.56mm NATO, configured with a 14.5-inch pinned-and-welded barrel. Features include an adjustable stock, ambidextrous safety controls, and adjustable sights. The rifle has a listed capacity of 30+1 and is equipped with a Dead Air KeyMo muzzle device, Radian Raptor LT charging handle, and Magpul grip.

The rifle is used, with an estimated round count of approximately 1,500–2,000 rounds. Most use has been with 5.56 NATO ammunition, with some use of 7.62x39 ammunition.

Also included is a separate 16-inch 7.62x39 barrel assembly, along with a Vortex UH-1 Gen II holographic sight and Vortex 3x magnifier.

Included components and accessories:

Dead Air KeyMo muzzle device
Radian Raptor LT charging handle
Magpul grip
Vortex UH-1 Gen II holographic sight
Vortex 3x magnifier
16-inch 7.62x39 barrel assembly .