BCM Recce 11 MCMR ELW AR-15 Semi Auto Pistol (Matte Black) Specifications and Features: BCM 610-850-ELW Direct Gas Impingement AR-15 Pistol 5.56 NATO (Accepts .223 Remington) 11.5" Enhanced Light Weight Profile Barrel Mil-Spec 11595E Barrel Steel 1:7" Twist Rate USGI Chamber Machined Aluminum Forgings 7075-T6 Aluminum Upper/Lower Receiver (Hard Coat Anodized Finish) M4 Feed Ramps Flat Top Upper With Laser T- Markings Carbine Length Gas System Low Shelf RDIAS Compatible Low Shelf for Accuwedge Use Safe/Semi Marked Fire Control Staked M4 Lock Nut USGI H buffer Pistol Buffer Tube BCM Bolt Carrier Group Carpenter 158 Steel Bolt HPT/MPI Carrier Shotpeened Tool Steel Extractor with BCM Extractor Spring Black Extractor Insert Chrome Lined Carrier (FA Profile) Chrome Lined Gas Key Hardened to USGI Specifications BCM MCMR Hand Guard BCM Gunfighter Charging Handle BCM Mod 0 Compensator BCM Mod 3 Pistol Grip BCM QD End Plate BCM PNT Trigger BCM Trigger Guard Approx Weight 5.6lbs Approx Length 27" Black