The ARAK-21 XRS is a complete rifle system, including Faxon Firearms’ custom AR-15 parts-compatible lower receiver* that matches the ARAK-21 perfectly. 

• Manufactured of 7075-T6 Billet Aluminum
• Graceful complex curves show off the attention to detail and machining. 
• Fully compatible with all AR-15 lower receiver parts kits. 
• Set-screw retained take-down pin spring for easy assembly. 
• Anodized Black or available in Cerakote FDE or OD. 
• Enlarged, integrated trigger guard. 
• Guarded, guided magazine release compatible with Norgon Ambi options. 

ARAK-21® FEATURES

• The upper receiver is fully machined from an aircraft grade 6061-T6 aluminum billet in a one piece design that incorporates a full length picatinny rail (Mil-STD-1913) on the top and three additional rails on the muzzle end of the receiver, making it a full M4 style quad rail upper.  The top picatinny rail is laser engraved for optic placement.  There are also half-length picatinny rails available.
• 12 ½” length BAU is available in 5.56, heavy profile. 16” and 20” length BAU’s are available in both the 5.56 and 300 BLK. There are two profiles to choose from, medium and heavy.  BAU’s can be interchanged in less than 3 minutes by removing the (6) captive allen screws on the bottom rail using the enclosed allen wrench.  
• Long stroke variable setting gas piston system.  There are three options for gas flow, and one for no gas flow.  This allows for single shot operation.  There is also a clean out port for the gas block between the gas cylinder, and the barrel.

• Charging handle is ambidextrous, non-reciprocating, foldable, spring returned and is easily relocated from left to right side without tools by the operator.

• Model “39” Eight (8) lug bolt design with involute profile for both right and left hand versions.  The extractor is positioned at 3 o’clock.  This allows for a left hand version to use the same bolt by simply removing the cam pin and rotating 180 degrees and reinstalling the cam pin.
• Self-contained firing pin retention system enclosed in a rectangular bolt carrier that no longer requires a cotter pin.
• Bolted in hardened steel rail system for the bolt carrier to ride on.  This allows a metal on metal wear surface for better wear characteristics and a much smoother operation.
• The ARAK-21® system allows for a folding stock to be added, as our recoil system does not extend beyond the upper receiver to fully operate.  This eliminates the noise and feel of the buffer tube cycling back and forth.

ARAK-21 XRS Rifle Includes:

• ARAK-21 XRS Rifle (As Ordered)
• B5 SOPMOD Bravo Stock (Black)
• Hogue Grip (Black)
• Ambidextrous Safety/Selector
• Shipping Box
• Manual
• BAU Removal Tools
• Magazine for chosen caliber(s) 5.56/300 & 7.62×39
• Magazine Marker Bands (300 BLK & 7.62×39, if ordered)
• Bolt(s) & Firing Pin(s) for Ordered Calibers
• Recoil Spring(s) for Ordered Calibers

 Faxon Technical Note on 7.62×39 Caliber Kit:

• The factory recommends a high-power hammer spring to use with the 7.62×39 kit. 
• Many aftermarket “light” triggers will not reliably ignite 7.62×39 surplus ammunition.  
• A spring is included and installed on XRS rifles ordered with the caliber. It is sold separately for the upper or caliber kit only. 
• Faxon recommends HiperFire triggers with a special spring kit for an improved trigger pull. Contact HiperFire for details.

Weight:

• The standard ARAK-21 upper receiver with a 16″ medium barrel weights in at 5.5 lbs. Pencil barrels remove .3 lbs and heavy barrels increase the weight .3 lbs. 
• Uppers equipped with 12.5″ medium barrels weigh approximately 5 lbs. 
• Heavy 20″ barrels increase the base weight approximately .5 lbs.