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Are these barrels threaded for chokes? I'd like to screw and extension on the barrel to bring it up to 18 inches. Thanks — 2 Answers

by Bronze armor, from AZ, United States Asked on January 17, 2026

Name Black River Manufacturing Non Ported SBS Benelli M4 12 Gauge Shotgun Barrel (5)
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Answered by B4time, member, from AZ, United States, on January 22, 2026

Okay, awesome! Going to thread on a muzzle brake over 4 inches and then (pin and weld) the muzzle brake on permanently to make the barrel over 18" (breech-face to muzzle end) before I get a Benelli. �

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Answered by FluidMotion, member, from VA, United States, on January 22, 2026

On the manufacturer's website, it states they are threaded. More specifically "Choke Thread: Benelli Mobil"

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