APF strives to offer the best quality product on the market, but at a fair price. With 30 plus years of machining knowledge they focus on quality with great attention to detail. Offering a wide variety of options, they have something to cover all of your firearms needs, whether it be recreational shooting, hunting, competition, target shooting or personal protection. FEATURES: Barrel: 16 in, 1:7 Twist 4150 CRMOV Nitride, Socom Contour, 1/2 x 28 TPI Gas System: 0.750 Gas Block and Mid Length Gas Tube Feed Ramps: M4 Finish: Cerakote Finish Frame Material: 7075 Aluminum Handguard: APF 15.5'' M-Lok Rail 7075 Aluminum Flash Hider: A2 Birdcage Trigger: APF 4.5 Lb. Drop in trigger