Rival Arms drop-in 9mm threaded conversion barrel for Glock 23 Gen 3 and Gen 4 frames. Lets you run 9mm through a .40 S&W Glock 23 — no slide swap and no gunsmithing. Seats directly into the factory Glock 23 slide and uses Glock 19 magazines for 9mm feed.
Machined from 416R stainless with a PVD black exterior finish. The match-grade chamber tightens lockup and produces noticeably tighter groups than the OEM Glock 23 barrel on both .40 and converted 9mm loads.
Break in with 100-150 rounds before group testing. Verify your Glock 23 is Gen 3 or Gen 4 — Gen 5 uses a different barrel profile and will not interchange. Suppressor, comp, and thread protector sold separately unless noted.
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