Bravo Company MFG (BCM) AR-15 Complete Lower Receiver w/ MK2RMS-M1T0 Mod-1 SOPMOD - Black

All BCM4 Lower Receiver Groups feature: Machined from Aluminum Forgings 7075-T6 Hardcoat Anodizing: MIL-A-8625F, Type III, Class 2 BCM Milspec 7075-T6 Receiver Extention Staked M4 Lock Nut USGI H Buffer (1 USGI Tungsten, 2 Steel) BCM Trigger Guard BCM PNT Trigger BCM Gunfighter's Grip, Mod 3 Low Shelf for RDIAS installation Low Shelf for Accuwedge use Fire Controls marked SAFE and SEMI Buffer Kit: Lessens felt recoil, without compromising reliability Provides a more consistent carrier velocity, which can aid in accuracy, reliability over conventional carbine buffer system Increased internal counterweight travel reduces bolt bounce Internal spring to reduce noise of counter weight shifting and ensure more consistent weight placement Mil-Spec M16A4 rifle spring with more spring coils than M4 carbine, increases consistency and widens operating envelope Buffer made of 7075T6 aluminum, hard coat anodized for lasting endurance. Comprised of Mil-Spec components BCM US Patent #10415907 Weight