Faxon Firearms ARAK21 7.62x39mm Upper Receiver Assembly

The ARAK21 Upper Receiver Assembly is a robust addition to any AR15 platform, offering a seamless upgrade with its gas piston operation. Designed for easy installation, it connects simply via the take down and pivot pins, requiring no tools and less than a minute of your time. The assembly comes with a Barrel Assembly Unit (BAU), featuring a barrel, gas block, and muzzle brake, among other components. The innovative gas adjuster knob provides four settings for optimal performance, including a single-shot mode. This upper receiver also includes a charging block, standard charging handle, and three full-length Picatinny rails, ensuring you have ample customization options. The dual recoil spring system and insulating shims contribute to its reliable performance. With its unique design, only a few parts are interchangeable with standard AR15 models, ensuring a distinct and efficient shooting experience.