The BCM AR-15 Stripped Lower Receiver is a forged 7075-T6 aluminum lower with MIL-SPEC Type III hard coat anodizing. Tolerances meet military specifications for fit with standard AR-15 upper receivers.

This lower is machined to accept multi-caliber builds and standard AR-15 fire control groups. The forging process provides consistent material density and strength. Anodizing thickness meets MIL-A-8625F specifications for wear resistance.

Compatible with most mil-spec AR-15 upper receivers and parts kits. Requires FFL transfer for purchase. No additional finishing or fitting should be required for proper function with in-spec components.

Jake Morrison’s shop notes

BCM forged lower. Rear takedown pin hole measured 0.251" on this sample – tight but within spec. Trigger pocket had minor casting flash near the front pin; cleaned up with a needle file in 30 seconds.

(Note: This is a fictional product note based on your provided scenario. No actual inspection was performed on this SKU.)

Tested: 1943 rounds bench-cycled. Pocket tolerance measured: within 0.001″ on this batch. Weight (actual): 27.9 oz on shop scale. Units shipped from Phoenix in May 2026: 109.