Ruger RXM 9mm 4.5" Threaded Barrel Kit

This factory Ruger barrel kit swaps a 4.5" threaded barrel into an RXM 9mm pistol so you can run a suppressor or muzzle device on the host gun. The barrel is precision rifled alloy steel with a black FNC nitride finish that matches the factory slide. Thread pitch is 1/2-28, and a thread protector ships installed so the muzzle is covered when nothing is mounted. This is a direct drop in for standard 4" RXM pistols — no gunsmithing required.

If you already own an RXM and want to add a host for a suppressor, this kit is the cleanest way in. Because the RXM uses a Gen 3 pattern slide, the threaded barrel fits under the factory slide without clearance issues, and your existing sights and optic mount stay intact. Ships as a bare barrel kit with thread protector. For the quietest possible setup, pair with a compatible 9mm suppressor and subsonic ammo.