The Colt AR15A4 Rifle is a semi-automatic, direct gas impingement rifle chambered in 5.56mm NATO, designed as a highly faithful civilian counterpart to the standard-issue United States military M16A4 rifle. This classic combat-profile firearm incorporates a 20-inch chrome-lined, government-profile barrel with a 1:7" twist rate and an A2 flash hider, built onto mil-spec forged 7075-T6 aluminum upper and lower receivers finished in a matte black Type III hardcoat anodizing. Operating on a soft-shooting, rifle-length gas system, it comes equipped with a traditional fixed A2 polymer buttstock (complete with an internal cleaning kit storage compartment), an A2 pistol grip, an ambidextrous manual fire selector, and dual-layer ribbed polymer handguards with a fixed A-frame front sight tower. The modular upper configuration features a removable, optics-ready flat-top Picatinny rail that ships with a milestone-correct, fully adjustable military target carrying handle sight. The rifle typically feeds from a 30-round Magpul PMAG, delivering an out-of-the-box capacity of 30+1. Colt AR15A4 5.56mm 20" Bbl Semi-Auto Ambi-Selector A2 Buttstock Carrying Handle Matte Black Rifle AR15A4