The Bravo Company BCM CMPLT LWR MK2 Receiver Extension Blemished is designed for serious gun owners looking to enhance their AR-15 builds. Constructed from durable 7075 T6 aluminum and finished with hardcoat anodizing, this receiver extension meets military specifications for strength and reliability. It features a low shelf for RDIAS installation, staked M4 lock nut, and is compatible with USGI H buffers. With its blemished finish, you can achieve high performance without compromising on quality. This receiver extension is an ideal choice for those seeking a robust foundation for their tactical firearms.