Caliber: 5.56x45mm NATO (.223REM) – Length: 32.25 – 35.5 – Weight: 6lbs 11oz – Upper Receiver: Forged 7075 T6 Aluminum Type III Hardcoat Anodized Forward Assist M4 Feed Ramps – Lower Receiver: Forged 7075 T6 Aluminum Type III hardcoat Anodized Accu-Tite™ Tension System – Barrel: 16 CMV Melonite® 1:8 – Gas System: Direct Impingement Mid-Length Pinned Gas Block – Trigger: Nickel Boron Coated GI – Sights: Low Profile Adjustable Flip-Up – Trigger Guard: BCMGUNFIGHTER™ – Pistol Grip: Strike Industries – Handguard: BCMGUNFIGHTER™ PKMR M-Lok – Butt Stock: Magpul Fixed – Buffer Assembly: Carbine H Heavy Tungsten Buffer – Receiver Extension: Mil-Spec – Charging Handle: GI Style – Bolt Carrier Group: M16 w/ Carpenter 158 Steel Bolt HPT/MPI Melonite® – Magazine: (1) 30-Round Magpul PMAG Gen M3 – Case: Soft Rifle Case