Bravo Company Mfg (BCM) BCM4 AR-15 Built Lower Receiver (Multi-Cal)
This Bravo Company Mfg (BCM) BCM4 built lower receiver is an AR-15 pattern lower marked “MULTI” for multi-caliber use. The receiver is factory-marked “MODEL BCM4” and includes the installed fire control components, selector, and controls in a complete lower assembly format.
Configuration includes an adjustable carbine-style stock, receiver extension, and a pistol grip (appears to have a star-style logo; brand not confirmed).