The Sig Sauer MCX Spear LT in 5.56 NATO (brand part no. RMCX556N16BIR) is a Coyote Tan-finished modern sporting rifle built on the short-stroke gas piston MCX platform, giving shooters a lightweight take on Sig’s flagship rifle line. Sig Sauer pairs a 16-inch barrel with a fast 1:7-inch twist and an ambidextrous lever-style safety, and the rifle feeds from a 30-round magazine sized to hold up to 28 rounds loaded. Among modern sporting rifles in the AR rifles category, the MCX Spear LT favors shooters who want a lightweight, optics-ready 5.56 platform.

Key Specifications

• Chambered in .223 Rem/5.56 NATO with a fast 1:7-inch rate of twist.
• Features a 16-inch barrel.
• Feeds from a 30-round magazine, one included.
• Overall length is 35 inches.
• The safety is an ambidextrous lever for either-hand operation.
• Ships optics-ready with no fixed sights installed.
• Ships at approximately 10.45 pounds shipping weight.
• Finished in Coyote Tan.

Frequently Asked Questions

Does this rifle come with sights? No, it ships optics-ready without fixed sights installed.

What kind of safety does this rifle use? An ambidextrous lever-style safety for either-hand operation.

Buy the Sig Sauer MCX Spear LT 5.56 Rifle

A lightweight, optics-ready take on Sig’s flagship MCX platform is exactly what the Spear LT delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.