SAK-21 -Evolution of the AK

While iconic, the AK-47 has changed little for decades. Companies have tinkered with this classic, but little has really changed. SHOT Show 2026 revealed a true game-changer, however. Say hello to the SAK-21 from Stenzel Industries.

SAK-21

SAK-21 – Modernizing The AK

The SAK-21 semi-automatic tactical rifle is an all-American, modernized, and seriously improved take on the classic Kalashnikov AKM design.  The SAK-21 is a modular, purpose-built firearm, developed to meet the demands of special operations forces and professional shooters. It is an American-made variant of the AK-47, based upon the Kalashnikov design, integrating its reliable, time-tested internal mechanics with modernized, performance-enhancing features.

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SAK-21

Short Stroke Piston

Designed with a short-stroke piston system optimized for suppressor use, it delivers a distinctive felt-recoil experience. As a multi-caliber platform, it allows users to swap barrel assemblies for different lengths and calibers—7.62×39, 5.56 NATO, 300 BLKOUT—ensuring adaptability to specific missions or tasks. Additional next-gen enhancements include a last-round bolt hold-open (LRBHO) mechanism for faster reloads, an empty magazine indication, and fully ambidextrous, intuitive controls for seamless operation.

Serious Features

Other improvements include a vertical Picatinny rail on the rear trunnion, allowing the installation of any Picatinny-compatible buttstock or arm brace. It features a return-to-zero hinged top cover, a full-length Picatinny optics rail, an extended magazine release, an oversized takedown button, and an extruded aluminum free-floated handguard.

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Range Tested

I had the opportunity to run the SAK-21 at the NSSF Media Day at the Range just prior to the SHOT Show. While I won’t turn into a fanboy, I can say this rifle is everything they claim it is. Everything from the gun’s fit and finish to its unique, mild recoil makes this rifle intriguing. My plan is to get one in and test drive it in more depth. In the end, the rifle is worth a serious look if you are interested in the AK world

 SAK-21 Features

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Interchangeable free float barrel assemblies for better accuracy
Interchangeable Calibers for mission optimization
Billet Aluminum Construction
Lightweight
Corrosion Resistant
Ambidextrous Crossbolt Safety
Last Round Bolt Hold Open with ambidextrous bolt release
Adjustable Short Stroke Piston System
Optimized for suppressor use
Softer felt recoil
Modular receiver design adaptable to multiple magazine types
1913 Rail for stock and pistol brace mounting options
Bolt catch and release with integrated ejector
Manual bolt hold-open feature
Return to zero-hinged top cover
Extended magazine release
5/8-24 tapered muzzle device
Oversized takedown button
Extruded aluminum free floated handguard

Specs

CALIBER7.62mm X 39mm | MULTI-CALIBER
OPERATING PRINCIPLEINDIRECT GAS-OPERATED
BOLT LOCKING MECHANISMAK47 STYLE TWO LUG ROTATING BOLT
FEED MECHANISMMAGAZINE
MODES OF FIRESEMI-AUTO
TRIGGERMILITARY TWO-STAGE
BARREL1:10 TWIST .308 BORE
EFFECTIVE COMBAT RANGE600 YARDS
MAGAZINEAK47/AKM
LENGTH31.50 in
FOLDED LENGTH23.25 in
WIDTH2.75 in
FOLDED WIDTH4.75 in
HEIGHT7.75 in
BARREL LENGTH12.50 in
WEIGHT8.25 lbs EMPTY
MSRP$3999.00

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