Sig Sauer

Sig Sauer MCX .300 Blackout Upper Receiver Conversion Kit

Convert any MIL-SPEC AR Lower into a MCX Rattler. Complete with upper assembly, lower receiver stock adapter kit, side folding AR buffer tube knuckler, and match duo trigger kit.

Includes:

• Complete MCX Upper
• Buffer Tube to MCX Stock/Brace Adapter
• 1913 to Buffer Tube Adapter
• Sig Sauer Match Duo Trigger Kit
• MLok Handguard
• Hammer Forged Carbon Steel Barrel
• TriLug Flash Hider
• Adjustable Gas Block

Specifications:

-Caliber: .300 Blackout (7.62x35)
-Barrel: 5.5"
-Twist: 1:5"