The Mean Arms Bearing Delay Upper Receiver will be sold as a complete upper receiver system ready to be paired with the AR lower receiver of your choice. Available in 5 different barrel lengths: 4.5″, 7.5″, 11″, 14.5″, 16″ – all threaded for a 1/2-28 muzzle device. No 9mm-specific buffer needed. The Bearing Delay Upper Receiver is designed to work with standard AR-15 buffers.
SPECS
- Caliber: 9mm Luger
- Compatible with both milspec AR-15 and dedicated pistol-magazine lower receivers
- Works with standard AR-15 buffers
- 5 available barrel lengths: 4.5″, 7.5″, 11″, 14.5″ and 16″
- Each Bearing Delay Upper Receiver includes:
- Fully tunable ball bearing bolt carrier group
- MA Upper Receiver – slick side billet machined aluminum upper receiver
- MA Handguard – free float hybrid metal/polymer design
- MA Charging Handle – new ambidextrous design
- MA Muzzle Device – exclusive machined design reduces recoil and muzzle flash
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