Expo Arms Complete 5.56 NATO AR-15 Bolt Carrier Group - Chrome - M16 Cut

The Expo Arms 5.56 NATO Complete MIL-SPEC M16/AR-15 Bolt Carrier Group is a reliable and high-quality option for any build. This drop-in bolt carrier group (BCG) is specifically designed for AR-15 platform firearms chambered in .223/5.56 NATO.

Featuring a hard chrome finish, this BCG provides exceptional corrosion resistance, ensuring durability and longevity. The MIL-SPEC dimensions guarantee compatibility with a wide range of AR-15 platforms. The bolt is constructed from magnetic particle inspected Carpenter 158 steel, known for its strength and reliability. The carrier is crafted from aircraft-quality 8620 steel and features the M16 cut. It includes a gas key secured by properly staked grade 8 screws for enhanced reliability. The gas key is built from 4130 steel to withstand the demands of consistent firing.

Additional features of this Expo Arms BCG include a 4140 steel extractor, MIL-SPEC O-ring and gas rings, 4140 steel cam pin, and a hard chrome-finished 8740 steel firing pin. These components are carefully chosen for their durability and functionality. Expo Arms takes pride in manufacturing this BCG in the U.S.A., utilizing domestically sourced materials.

Features:

• Chambered in .233/5.56 NATO
• Hard chrome finish for corrosion resistance
• M16 cut for reliable performance
• Aircraft-quality 8620 steel carrier
• 4130 steel gas key with properly staked grade 8 screws
• Carpenter 158 steel bolt for strength and reliability
• 4140 steel extractor
• MIL-SPEC O-ring and gas rings
• 4140 steel cam pin
• Hard chrome-finished 8740 steel firing pin
• Magnetic particle inspected for quality assurance
• Lifetime warranty
• Proudly made in the U.S.A.