AR15 Semi Auto Complete Bolt & Carrier - Nitride Finish

5.56 Semi-Auto BCG (No Logo) is a solid upgrade for AR-15 builders who want dependable cycling and a clean, modern look. Built with an 8620 steel carrier and a Carpenter 158 bolt, this semi-auto carrier group is finished in black nitride for improved wear and corrosion resistance. Forward assist serrations support standard upper function, while a properly staked, chrome-lined gas key helps ensure consistent reliability over long round counts. Features No logo for a clean, modern appearance Semi-auto carrier profile (SEMI-AUTO ONLY) 8620 steel carrier with forward assist serrations Carpenter 158 bolt, shot peened for durability Properly staked gas key Chrome-lined gas key and bolt channel Extractor with black O-ring insert Black nitride finish for enhanced corrosion and wear resistance Specifications Caliber: 5.56 NATO / .223 Rem Carrier Material: 8620 steel Bolt Material: Carpenter 158 Finish: Black Nitride Carrier Type: Semi-auto Gas Key: Properly staked, chrome-lined Platform: AR-15