The Radical Firearms RF-15 pistol is chambered in 5.56 NATO and features a 10.5 inch barrel. It comes with a Magpul BTR brace and Magpul grip for improved stability and comfort. It has a 30 round magazine, an M-LOK handguard, and a chrome-moly vanadium barrel with a Black Melonite finish. Threaded barrel with a 1:7 twist and an A2 flash hider. Sights: No Sights. Not available to ship to certain states listed in the product description. This is a complete AR-15 pistol designed for tactical use with semi-automatic action.