Combat Armory CA-15 Features The Combat Armory CA-15 is built around a chrome moly vanadium barrel with a 1:7 twist rate a chambering suited to a wide range of 5.56 bullet weights for both plinking and precision work. The carbine-length gas system and .750 low profile gas block cycle the action reliably while the M4 feed ramps on the barrel extension support smooth consistent feeding. A 1/2x28 threaded muzzle fitted with an A2 flash hider protects the crown and allows for a muzzle device swap down the road. The billet 7075-T6 upper and lower receivers are finished in Type III anodizing for corrosion resistance and long-term durability. The 15 inch free-float M-LOK handguard gives shooters room to mount lights foregrips slings and other accessories exactly where needed without contacting the barrel. A Mil-Spec ambidextrous safety selector forward assist and dust cover round out the controls for right or left-handed shooters alike. The rifle s Picatinny top rail keeps it ready for a red dot or magnified optic straight out of the box. Paired with a pistol buffer tube and a 10-round magazine the CA-15 offers a dependable Mil-Spec AR-15 platform for shooters building out a home defense or range rifle. Combat Armory CA-15 Specifications Manufacturer: Combat Armory Model: CA-15 Type: Semi-Auto Caliber: 5.56mm Capacity: 10 Rounds Barrel Length: 16 Barrel Material: 4140 Chrome Moly Vanadium Barrel Profile: M4 Barrel Finish: Melonite Twist Rate: 1:7 Muzzle Thread Pitch: 1/2x28 Muzzle Device: A2 Flash Hider Gas System: Carbine Length Handguard: 15 M-LOK Free Float Slim Rail Upper Receiver Material: Billet 7075-T6 Aluminum Receiver Finish: Type III Anodized Optic Ready: Picatinny Rail Magazines Included: 1 Available At: GrabAGun