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This Sig Sauer Sig MCX Upper Receiver Assembly, M-LOK is a complete upper assembly kit built to improve your weapon's function. 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.
- Color: Black
- Caliber: .300 AAC Blackout
- Barrel Length: 5.5 in
- Gun Rail: M-LOK
- Gun Make: SIG Sauer
- Gun Model: SIG Sauer MCX
WARNING: California Prop 65