The Sig Sauer MCX Spear LT is a semi-automatic pistol chambered in 5.56 NATO with an 11.5-inch barrel. It has a Flat Dark Earth Cerakote finish, a folding brace, and a 10+1 round capacity. The Spear LT IR ships with polymer grips in a compact AR-pattern pistol configuration. 
 

Key Specifications 

• Brand: Sig Sauer 
• Model: MCX Spear LT IR 
• Caliber: 5.56 NATO 
• Action: Semi Auto 
• Capacity: 10+1 rounds 
• Barrel Length: 11.5 in 
• Color/Finish: Flat Dark Earth 
   

Detailed Features 

• 11.5-inch barrel in 5.56 NATO 
• Flat Dark Earth Cerakote finish 
• Folding brace 
• Polymer grips 
• IR-equipped variant designation (Spear LT IR)

The MCX Spear LT attracts buyers looking for a compact 5.56 pistol platform. Owners generally praise Sig Sauer's fit and finish, and the folding brace keeps the package highly portable. The FDE Cerakote application is considered a quality, durable finish.

The IR variant of the Spear LT is aimed at users running night-vision setups, and feedback from that segment is largely positive on the integration. For standard daylight use, the 11.5-inch barrel produces notable muzzle blast, which some owners consider a worthwhile trade-off for portability.

At its price point, the MCX Spear LT divides opinion. Buyers comparing it to budget AR pistols find it expensive; those coming from other Sig Sauer MCX variants see it as well-built and worth the cost. The 10+1 capacity with the folding brace configuration is noted as a practical combination.