SIG SAUER SIGMCX UPPER 5.56 NATO 5.5″ RATTLER BLACK

Sig Sauer MCX Rattler Upper 5.56 NATO Conversion Kit, 5.5″ Barrel. This upper Sig Sauer MCX Rattler AR 5.56 NATO conversion kit with a 5.5″ barrel length comes with everything needed to put on any standard MIL-SPEC AR lower. This conversion kit includes: a 1/2″ x 28 threaded barrel, a complete bolt carrier group, a Sig Sauer MCX upper, side folding AR buffer tube knuckler, and an AR Two-Stage Matchlite DUO trigger kit. The SIG Matchlite Duo trigger unit provides a crisp and clean feel, and a new tapered bolt lug design extends bolt life while resulting in smoother cycling. The MCX Rattler upper receiver assembly features a standard free-floating M-LOK handguard with a top picatinny rail for sight and optic, as well as a short-stroke piston system and unique internal recoil system that eliminates the M4-style buffer tube resulting in a light-recoiling and compact platform able to be configured for any task. Features: Hard coat anodized finish Aluminum M-LOK handguard Tapered bolt lug 5.5″ long barrel 1/2″ x 28 TPI Threads Flash Hider Includes: MCX Rattler Upper Side Folding AR Buffer Tube Knuckler AR Two-Stage Matchlife DUO Trigger Kit SPECIFICATIONS: Barrel Length: 5-1/2″ Barrel Thread Pitch: 1/2″ x 28 TPI Brand: Sig Sauer Caliber: .223 Rem,5.56x45mm Finish / Color: Black Firearm Type: Rifle Material: Steel,Aluminum Models Fit: AR-15,Sig Sauer MCX SKU UAMCX-5B-556-BLK-TAP UPC 798681615803