Bushmaster 91053 XM-15 Carbine Heavy Barrel Semi-Automatic 300 AAC Blackout/Whisper (7.62x35mm) 16\" 30+1 6-Position Black Stk Black The Bushmaster XM-15 16\" Heavy Barrel Carbine provides heavy-duty performance whenever duty calls. The heavy profile 16\" chrome moly vanadium steel barrel is manganese phosphate-finished to insure protection against corrosion and rust, and the carbine features an A2 flash hider and a 6-position telescoping stock. The upper and lower receivers are machined from 7075-T6 aircraft aluminum forgings for light weight and added strength. The carbine ships with operator safety manual, chamber flag, and a 30-round magazine. SPECIFICATIONS: Mfg Item Num: 91053 Category: RIFLES CENTERFIRE TACTICAL Action :Semi-Automatic Caliber :300 AAC Blackout/Whisper (7.62x35mm) Barrel Length :16\" Capacity :30+1 Trigger :Single-Stage Safety :Lever OAL :36.25\" Weight :7.28 lbs Stock Description :6-Position Black Metal Finish :Black Muzzle :A2 Flash Hider Receiver Material :Aluminum Barrel Description :4150 Chrome Moly Vanadium Heavy Twist :1:9\" Hand :Right Stock Finish Group :Synthetic Metal Finish Group :Blued/Black