Bear Creek Arsenal's first pump-action AR-15, launched November 5, 2026, in .400 Legend. A sliding forend cycles the bolt by hand instead of gas, on a standard AR-15 lower with an 18-inch 1:16 barrel, 15-inch M-LOK rail, full-length top rail, and a muzzle brake.
The Bear Pump is Bear Creek Arsenal's first pump-action AR-15, and this is the .400 Legend rifle with the 18-inch barrel. The action cycles by hand: pull the sliding forend rearward to extract and eject the spent case, push it forward to chamber the next round. The lower is a standard AR-15 lower with a mil-spec trigger, so AR grips and stocks carry over.
The barrel is an 18-inch heavy-profile 4150 chrome moly vanadium tube with a parkerized finish and a 1:16 twist, capped by a muzzle brake. A 15-inch M-LOK split rail surrounds the pump forend, and a full-length Picatinny top rail runs forward from the receiver for an optic. Bear Creek lists the rifle at 7.7 pounds with the bolt carrier group and charging system included and no magazine in the box.
.400 Legend is Winchester's straight-wall deer cartridge for the AR-15, so this is a hunting rifle for states and seasons built around straight-wall cartridges. Some states regulate AR-15 receivers or named models as well as semiautomatic actions, so check your state's law before buying.
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Add optics, lights, and accessories to build your perfect Bear Creek Arsenal Bear Pump (.400 Legend, 18").