Brand: Faxon Firearms
Model: ARAK-21 Complete Upper
Caliber: 5.56 NATO
Barrel Length: 16"
Barrel Finish: Black
Receiver Finish: Black Anodized
Material: 6061-T6 Aluminum

Features

The ARAK-21 is a self-contained upper receiver assembly that brings gas-piston operation to your AR-15 platform. It's designed for easy, tool-free installation—simply attach it to your existing AR-15 lower receiver using the takedown and pivot pins, a process that takes less than a minute.

This innovative upper receiver boasts a Barrel Assembly Unit (BAU), which includes the barrel, gas block, muzzle brake, gas piston, gas adjuster, and barrel trunnion. The gas adjuster knob is the only removable component of the BAU, offering four settings: three for optimal gas flow under different conditions and one for single-shot operation.

The ARAK-21 upper receiver also comes equipped with a charging block, standard charging handle, lower forearm with screws, three full-length aluminum Picatinny rails, three insulating shims, a bolt carrier assembly, a lower recoil lug with a spring guide rod, and a dual recoil spring system.

Due to its unique design, the ARAK-21 has minimal parts interchangeability with a standard AR-15. Only the firing pin, extractor spring, and ejector spring are standard and can be swapped with AR-15 components.

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.