Product Features & Specifications

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