The Mean Arms Bearing Delay 9mm Luger 11 in Assembled Upper Receiver is a complete AR-style upper system built around a ball bearing delayed blowback bolt carrier group. It’s designed to pair with the AR lower receiver of your choice and provides a tunable delay system while staying familiar to AR-15 handling and controls.
Key Features
Ball bearing delayed blowback bolt carrier group for a tuned timing lockup and reliable cycling
Tunable operation using included lifters to adjust the bearing actuation surfaces for different ammunition and setups
Slick-side billet machined aluminum upper receiver with no forward assist
Free-float hybrid handguard with a high-strength polymer body and permanently attached metallic insert
Ambidextrous charging handle with mixed steel and aluminum components
Includes an MA muzzle device that reduces recoil and muzzle flash with a left-hand threaded jam nut for installation without a crush washer
Complete and ready to build, this Mean Arms Bearing Delay 9mm upper receiver brings roller-delay-style benefits with AR-15 familiarity for your next 9mm platform project.
