Components

Barrel: 16" 416R Stainless Heavy BarrelTwist: 1:24Caliber: 450 Bushmaster12" Free Float HandguardACME AR-15 Upper Receiver ** Muzzle device not include** *Picture might show optional accessories

Barrel: 16" 4150 Parkerized Heavy BarrelTwist: 1:14Caliber: 458 SOCOM12" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride ** Muzzle device not include** *Picture might show optional accessories

Barrel: 16" 416R Stainless Steel Heavy BarrelTwist: 1:14Caliber: 458 SOCOM12" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride ** Muzzle device not include** *Picture might show optional accessories

Barrel: 16" 4150 Black Nitride M4 ContourTwist: 1:7Caliber: 5.56 Chamber15" Free Float HandguardACME AR-15 Upper Receiver ACME 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel: 16" 416R Stainless Steel M4 ContourTwist: 1:7Caliber: 5.56 Chamber15" Free Float HandguardACME AR-15 Upper Receiver 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel: 16" Parkerized 4150 Steel Contour BarrelTwist: 1:10Caliber: 6.8 SPC II12" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 6.8 Mil-Spec Bolt Carrier Group AR-15 Nitride *Picture might show optional accessories

Barrel: 16" 4150 Black Nitride Heavy BarrelTwist: 1:10Caliber: 7.62x3912" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 7.62x39 Mil-Spec Bolt Carrier Group AR-15 Nitride *Picture might show optional accessories

Barrel: 16" 416R Stainless Steel Heavy BarrelTwist: 1:10Caliber: 7.62x3912" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 7.62x39 Mil-Spec Bolt Carrier Group AR-15 Nitride *Picture might show optional accessories

Barrel:  16" ParkerizedCaliber: 350 Legend12" Super Slim Free Float HandguardACME Bolt Carrier Group *Picture might show optional accessories

AR-15 Barrel: 16 ” M4 Contour Barrel with 1:8 Twist,Chambered in 5.56/.223 ,Parkerized Finish, Threaded Barrel, M4 Feed Ramps Carbine Gas System, 1/2 x 28 threaded barrel. Length: 16Profile: ContourTwist: 1-8Finish: ParkerizedMaterial: 4150Caliber: 5.56/...

Barrel: 16"  Black Nitride 4150 Steel Contour Twist: 1:10Caliber: 9mm12" Free Float Keymod HandguardACME AR-15 Upper Receiver Tool Craft 9mm Mil-Spec Bolt Carrier Group Nitride *Picture might show optional accessories

Build Kit Includes:01-501: 16" 5.56 M4 Carbine Contour Barrel Chambered 1:8 Twist02-201: 5.56 Enhanced Bolt Carrier Group AR-15 Nitride03-110: 15" Super Slim Gen II Keymod04-301: AR-15 Lower Parts Kit Complete Luth-AR OEM04-306: AR-15 Ambidextrous...