SIG SAUER MCX Rattler Upper Receiver Assembly .300 BLK M-LOK Handguard 5.5 inch Black

SIG SAUER MCX Rattler Upper Receiver Assembly .300 BLK M-LOK Handguard 5.5 inch Black. These AR15 Upper Receivers crafted by SIG SAUER convert any MIL-SPEC AR Lower into an MCX Rattler with ease. Each Sig Sauer Sig MCX Upper Receiver Assembly - 5.5in 300BLK includes an upper assembly lower receiver stock adapter kit side folding AR buffer tube knuckler and a match duo trigger kit. Complete or upgrade your weapon build with this high quality Sig Sauer Sig MCX Rattler Upper Receiver Assembly. Specifications for SIG SAUER Sig MCX Upper Receiver Assemebly M-LOK: Manufacturer: SIG SAUER Caliber: .300 AAC Blackout Barrel Length: 5.5 in Gas System Length: Carbine Length Barrel Twist Rate: 1-5 Threads per Inch: 5/8x24 Color: Black Gun Model: SIG Sauer MCX Condition: New Gun Rail: M-LOK Gun Make: SIG Sauer Magazine Included: No Package Contents: SIG SAUER Sig MCX Upper Receiver Assemebly M-LOK SIG SAUER Infinite Guarantee SIG SAUER UAMCX-5B-300-BLK-TAP: MCX Rattler Upper Receiver Assembly .300 BLK M-LOK Handguard 5.5 inch Black