![]() Note: those selecting a 14.5" barrel upper will have the option to select whether the muzzle device should be permanently attached or not. Comes with a left-hand threaded jam nut which eliminates the need for a crush washer. The new MA Muzzle Device reduces recoil and muzzle flash. The MA Charging Handle is a new ambidextrous design incorporating both steel and aluminum machined components. The new MA Handguard is a free float hybrid design including a very rigid high temperature and high strength polymer body with a metallic insert that is overmolded (permanently attached) within the handguard and threads onto the specially designed barrel nut.Īvailable in 5 lengths based on the barrel configurations of our Bearing Delay Upper Receiver. The Bearing Delay Upper Receiver includes a slick side billet machined aluminum upper receiver that adheres to milspec standards. Most pistol magazine lower receivers will need to have the stationary ejector removed to be compatible with the Bearing Delay system.Įach Bearing Delay Upper Receiver includes 2 Ejectorless Endomags. If you elect to use MEAN Arms Endomags (Ejectorless), the Bearing Delay Upper Receiver is compatible with milspec lower receivers OR you can use dedicated pistol magazine lower receivers. Each Bearing Delay Upper Receiver includes two Lifters. ![]() The ability to tune the system by swapping the Lifter means that the Bearing Delay™ system can be tuned based on ammunition type, barrel length, suppressor, or any other factor. This means that even with the higher pressures of modern ammunition, the Bearing Delay system has greater durability than any roller delay. So with our 3 bearings, we have 50% more contact surface area than a traditional roller delay. Each of our ball bearings has the same contact surface area of the original MP5 roller. Take all the benefits of roller delay: reliability, durability, low recoil and combine with the familiarity of the AR-15 platform. The firing pin passes through the ejector. The bolt face includes our unique center ejector to provide the most consistent ejection of any 9mm AR on the market. The system can be tuned by replacing the Lifter to change the angle of the surfaces that push the bearings from the inside of the BCG. The ball bearings interface with corresponding features in the barrel extension and provide the lockup in battery and the delay after firing. The heart of the Bearing Delay Upper Receiver is the unique ball bearing bolt carrier group (BCG). The Bearing Delay Upper Receiver is designed to work with standard AR-15 buffers. Available in 5 different barrel lengths: 4.5", 7.5", 11", 14.5", 16" - all threaded for a 1/2-28 muzzle device. The 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. Introducing the new MEAN Arms Bearing Delay™ upper receiver in 9mm. Expected to begin shipping late Q1 - early Q2. All Bearing Delay upper orders will be shipped in the order in which they were received. Once your Upper Receiver Assembly is ready to ship you will be contacted to pay the remaining balance. Your reservation for the MEAN Bearing Delay Upper Receiver Assembly is held with a $50 deposit and is fully refundable. NOTE: This is a DEPOSIT to hold your exclusive place in the queue.
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