The TriStar KRX Tactical 12 Gauge Shotgun, 20-Inch Barrel is a gas-operated, box-fed 12 gauge built by TriStar Arms (brand part no. 25125) for shooters who want AR-style ergonomics on a shotgun platform. Rather than a traditional tube magazine, the KRX Tactical feeds from a detachable 5-round box magazine, and two ship with every gun so extra ammunition is always staged and ready. The chrome-lined 20-inch barrel and chamber cycle 3-inch shells reliably, while a full-length Picatinny rail, removable carrying handle, and bridge-mounted fiber optic front sight give it a genuinely tactical profile. It works equally well as a truck gun or a dedicated home-defense shotgun.

Key Specifications

• Gas-operated semi-auto action feeds from a detachable box magazine rather than a tube, an AR-style layout that is unusual for a 12 gauge.
• Chambered in 12 gauge with a 3-inch chamber for standard and magnum shells.
• Chrome-lined 20-inch barrel and chamber resist corrosion and simplify cleaning.
• Rated 5+1 capacity, and two 5-round magazines ship with the gun.
• Uses a removable choke system on Beretta/Benelli Mobil-pattern threads, and includes an extended tactical choke tube.
• A removable, bridge-style front sight houses a fiber optic insert for fast target acquisition.
• A full-length Picatinny rail runs the length of the receiver for mounting a red dot or other optic.
• Stock and forearm are molded from durable injection-molded polymer built to handle hard use.
• A rubber recoil pad softens felt recoil, and sling swivel studs are built in for a carry strap.
• Weighs 7.4 pounds unloaded, light enough to maneuver quickly indoors.

Frequently Asked Questions

Does the TriStar KRX Tactical feed from a box magazine or a tube? It feeds from a detachable 5-round box magazine rather than a traditional tube, and it ships with two magazines.

What choke does it come with? An extended tactical choke on Beretta/Benelli Mobil-pattern threads, so aftermarket chokes on the same pattern will also fit.

Can I mount an optic on it? Yes. The full-length Picatinny rail accepts red dots and other optics, and the removable carrying handle can come off to make room.

Buy the TriStar KRX Tactical 12 Gauge Shotgun, 20-Inch Barrel

The KRX Tactical brings a genuinely different feed system to the tactical shotgun world, and TriStar Arms backs it with a five-year warranty. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and pair it with a spare box magazine so you are never caught short. Browse our full lineup of semi-auto shotguns to compare it against other tactical builds.