Mitchell Defense The DOC AR-15 .300 BLK 7.5in Upper Receiver Chrome-Moly Barrel Black Finish M-LOK Free-Float Handguard

Mitchell Defense The DOC AR-15 .300 BLK 7.5in Upper Receiver Chrome-Moly Barrel Black Finish M-LOK Free-Float Handguard. 5in .300 Blackout Upper Receiver is built for compact maneuverability and reliable suppressed performance. The 7075-T6 billet upper receiver features Mitchell Defense's thermal-fit barrel seat to reinforce structural integrity and improve accuracy under rapid firing. Its 7.5in barrel is optimized for close-quarters performance offering balanced rigidity and consistent terminal