- ARAK & XRS
- Parts & Accessories
Components of the ARAK-21® Upper Receiver:
The ARAK-21® is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the take down pin, and the pivot pin. The new ARAK-21® upper receiver offers you all its features with no change to your current lower receiver and can be installed in less than one minute with no tools.
Your ARAK-21® upper receiver will be shipped to you with one “Barrel Assembly Unit” (BAU), or two, depending on which package you purchase.
The BAU is comprised of the barrel, gas block, muzzle brake, gas piston, gas adjuster, and barrel trunnion. The only removable part of this assembly is the gas adjuster knob. The gas adjuster knob has 4 settings. Three of the settings allow different gas flows for optimum operation, and one setting blocks the gas flow for a single shot operation.
The upper receiver includes the charging block, standard charging handle, lower forearm with screws, three aluminum full length picatinny rails, three insulating shims, bolt carrier assembly, lower recoil lug with spring guide rod, and dual recoil spring system. Along with your new ARAK-21® upper receiver you will receive your owners manual, and two allen wrenches that will fit the screws that attach the lower forearm, and the front picatinny rails.
Due to the unique and innovative features of the ARAK-21® upper receiver, there are very few parts that are interchangeable with a standard AR-15. The firing pin, extractor spring, and ejector spring are the only parts that are standard and interchangeable with an AR-15 upper receiver.
Other features include:
Charging handle is ambidextrous, non-reciprocating, foldable, spring returned and is easily relocated from left to right side without tools by the operator.
PLEASE NOTE:Images shown may include items not sold with the ARAK-21® Upper Receiver.
Due the fixed gas system length of the ARAK platform and variability of 300 BLK subsonic ammunition, a suppressor is required for reliable function with the 300 BLK BAUs using subsonic ammunition and supersonic on the 12.5" barrel.
Due to changes in California gun laws we are no longer able to sell/ship the ARAK-21 XRS to California.
I am a US Army SOF veteran. I have used multiple weapon systems during my career. I have beed waiting for an rifle that had the best of both worlds. Finally FAXON came out with the ARAK 21! I would recommend using "Troy Industries Micro HK Style Front and Rear Folding Battle Sight". I zeroed my ARAK at 25 yards and then zeroed my red dot sight. No problem hitting targets at 300 meters! I am giving ARAK 21 5 stars!!
James on 14th Oct 2016
I love ar's but respect the durability of a ak47! This is the best of both worlds as advertised. I had a long wait to get this upper but it was well worth it. I know the DoD wants to adopt a new platform this would fit the bill! Faxon maybe you can do what colt and other gun manufacturers did with the m4 and farm out production? I'm very impressed with the fit and function of the arak21. Tango Bravo on 13th Oct 2016
Tolerances are tight. Recoil is smooth and flat. The ergonomics are excellent. But one now before Hillary puts a stop to it. rob on 13th Oct 2016
After seeing this firearm in photos for years I bit the bullet and saved for it. I purchased the upper and another barrel. Putting it on my NFA compliant lower because the barrel is 12.5" taking it out to shoot was an experience. The weapon fires smooth. Really smooth! This is my first piston driven firearm and the difference is amazing. Faxon has done a great job with their precision machining. Everything's tight and moves smoothly. With their muzzle brake the weapon is loud! All in all it's a piece of art. Only con is its kinda front heavy but I went with a heavy barrel too. Still 5 stars in my book Archer C on 8th Oct 2016
This is the best upper I have ever used! If you want something different and more reliable than your standard AR, this is for you! Fit and finish is top notch, this upper is built like a tank! If have something wrong with your order like I had, Dominic and Pat will take care of you! I had a cracked brass deflector and they sent a replacement immediately to me. I will definitely order another ARAK-21, but this time I will order one in FDE. Matt L. on 19th Sep 2016