ARAK-21®
Patented Long-Stroke Piston Technology
ARAK-21® Complete Upper Receivers
Drop On. Level Up.
The ARAK-21® is Faxon Firearms' patented piston-driven upper receiver that transforms any mil-spec AR-15 lower into a modular, multi-caliber weapon system. Built around a long-stroke gas piston with a self-contained recoil system, the ARAK-21 eliminates the need for a buffer tube — unlocking folding stocks, shorter overall length, and a fundamentally different operating platform that runs cleaner, smoother, and more reliably than direct impingement.
NO BUFFER TUBE
Self-contained recoil system. Use folding stocks, wire stocks, or PDW braces.
CALIBER CONVERSION
Swap between 5.56 NATO and 7.62x39 in minutes with Barrel Assembly Units.
FULLY AMBIDEXTROUS
Reversible bolt, dual ejection ports, and non-reciprocating forward charging handle (tool-free left/right swap).
PATENTED DESIGN
U.S. Patent 9,032,860 B2. Designed and manufactured in Cincinnati, Ohio.
Complete Upper Receivers from $999 | Available in 5.56 NATO & 7.62x39 | 12.5" & 16" Barrels | Lifetime Guarantee
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