Colt M4 Pistol Features The Colt M4 Pistol operates on a direct impingement system built around mil-spec forged 7075-T6 aluminum upper and lower receivers finished in black anodize for lasting durability and corrosion resistance through hard use and demanding conditions. The 10.3 black phosphate steel barrel delivers reliable 5.56 NATO performance in a compact package that keeps overall length between 26.80 and 29.30 depending on brace position making this one of the most maneuverable AR platform pistols available without crossing into SBR territory. A selector switch safety provides the shooter with a familiar and positive manual safety solution carried over directly from the proven M4 platform. For home defenders and sport shooters who want the combat proven direct impingement reliability of the Colt M4 in a short barreled pistol configuration this platform delivers duty grade performance in a compact and legally unrestricted package. The free-float handguard features a full length M1913 Picatinny top rail for optics and accessories with seven orientations of M-LOK mounting surfaces along the handguard body for lights grips and other accessories to be positioned exactly where the shooter needs them. An SB Tactical SBA5 pistol stabilizing brace on a 6-position mil-spec extension gives the shooter a stable and adjustable interface with the pistol for improved control and accuracy during rapid fire strings. A black polymer grip and A2 birdcage flash hider round out the package with proven mil-spec components that require no upgrades out of the box. For AR enthusiasts competitive shooters and home defense minded buyers who want a fully accessory ready Colt M4 Pistol with a free-float M-LOK handguard and SBA5 brace in a duty grade black anodized package this pistol is available for sale at GrabAGun. Colt M4 Pistol Specifications Manufacturer: Colt Mfg Model: M4 Pistol Type: Semi-automatic AR Pistol Platform: AR Style Caliber: 5.56 NATO Capacity: 30+1 Barrel Length: 10.3 Barrel Material: Steel Barrel Finish: Black Phosphate Muzzle Device: A2 Birdcage Flash Hider Receiver Material: Aluminum Receiver Finish: Black Anodized Receiver Description: Mil-spec Forged 7075-T6 with Picatinny Rail Handguard: Full Length M-LOK with M1913 Picatinny Top Rail Brace: SB Tactical SBA5 Pistol Stabilizing Brace Brace Description: 6-Position Mil-spec Extension Grip: Black Polymer Safety: Selector Switch Operating System: Direct Impingement Overall Length: 26.80 to 29.30 Weight: 5.70 lbs Finish: Black Anodized Available At: GrabAGun