Midwest Industries 5.56/AR15 Enhanced Bolt Carrier Group

The Midwest Industries Enhanced Bolt Carrier Group is a mil-spec replacement BCG designed for reliable function in any AR-15 or 5.56 NATO rifle. This full-auto rated carrier group delivers consistent cycling with factory ammunition and common powder loads, making it a dependable spare or upgrade for standard mil-spec BCGs that show wear or function issues. The enhanced finish sheds carbon buildup more readily than standard phosphate, reducing cleaning time after extended range sessions.

Manufactured from 8620 steel carrier and 9310 steel bolt with a hard chrome interior and enhanced DLC coating on exterior surfaces. The staked gas key is properly torqued to mil-spec and secured with grade 8 fasteners. This is a drop-in replacement for any mil-spec AR-15 lower receiver—no fitting or gunsmithing required. Inspected and proof-tested before shipping.

• Part Type: Bolt Carrier Group (Full-Auto Profile)
• Compatible Firearms: AR-15, 5.56 NATO chambered rifles
• Material: 8620 steel carrier, 9310 steel bolt
• Finish: DLC exterior, hard chrome interior
• Installation: Drop-In
• Includes: Bolt carrier, bolt assembly, cam pin, firing pin, retaining pin