Sig Sauer MCX-Spear LT Features

The MCX-Spear LT Upper/Conversion Kit stands out with its dual rod recoil assembly, which innovatively eliminates the traditional buffer system, allowing for a more compact and efficient design. The M4 adapter enhances the kit’s versatility, enabling the use of Pic rail folding stocks and thereby expanding configuration options. An adjustable gas system allows for precise tuning, especially when using suppressors, optimizing performance under varying conditions.

A hallmark of this kit is its quick-change barrel design, allowing users to easily switch calibers and barrel lengths, adapting the firearm to different roles or preferences. The gas piston operating system minimizes carbon fouling on critical parts, extending the maintenance intervals and overall life of the firearm. Designed for durability, the kit’s components are engineered to endure 20k rounds before requiring any part replacements, supported by a next-gen suppressor designed QD flash hider for seamless suppressor integration.

Sig Sauer MCX-Spear LT Specifications

• Model: SIG MCX-SPEAR LT
• Caliber: 5.56 NATO
• Barrel Length: 11.5″
• Overall Length: 19.75″
• Weight: 4lb, 7oz
• Barrel: Nitride Coated Cold Hammer Forged
• Barrel Rifling Type: Hammer Forged
• Twist Rate: 1:7
• Operating System: Gas Piston
• Muzzle Device: 3-Prong/SIG Suppressor QD
• Muzzle Thread Pitch: 1/2-28
• Handguard Length: 10.23″
• Handguard Inside Diameter: 1.48″
• Handguard Material: Aluminum
• Receiver Finish: Black Anodized
• Bolt Carrier Group Included: Yes
• Bolt Carrier Finish: DLC
• Charging Handle Included: Yes
• Forward Assist: Yes
• Free Floated Handguard: Yes