Description
The Radian Afterburner and Ramjet for the Ruger RXM is a matched barrel and micro compensator set, sold together, for the 4.0 inch RXM. Radian designed the system so a stock pistol can run a compensator without a threaded barrel. The Ramjet has no threads. Radian’s Intra-Lok mount uses a tapered locking screw in the Afterburner that seats into an angled V-groove under the barrel, which times the comp and holds it without thread locker. Install is a barrel swap: remove the factory barrel, drop in the Ramjet, reinstall the recoil spring assembly, slide the Afterburner over the muzzle, and torque the screw to 15 inch pounds per Radian’s instructions. No shims or crush washer. One screw frees the comp for cleaning.
Radian machines the Ramjet from hardened 416R stainless steel with flutes and a gas sealing chamber, and the Afterburner from hardened stainless steel; both wear Radian’s Radianite coating in black. Gas exits through one top port with no side ports. Radian says the installed combo matches the length of the RXM 4.5, so it fits RXM 4.5 holsters. Radian’s stated design goal for the system was reliable cycling with the stock recoil spring, and Radian sells a Compressor guide rod with 13, 15, and 18 pound springs for the Glock pattern guns if you want to tune. Included: Ramjet barrel, Afterburner, Intra-Lok tapered screw, and a Torx bit.
Fitment: Radian lists this version for the Ruger RXM with the 4.0 inch barrel only. It will not fit the RXM 4.5 (longer barrel), and Radian sells it as a dedicated RXM part, not as a Glock 19 Gen 3 or Glock 45 part, so do not plan on moving it to a Glock. Radian states fitment for the factory Ruger slide and publishes no list of approved aftermarket slides. The Afterburner only mounts to a Ramjet barrel.
Specs
- Fits: Ruger RXM 4.0 inch (factory slide)
- Caliber: 9mm
- Thread pitch: None (threadless Intra-Lok taper lock mount)
- Ports: One top port, no side ports
- Length added: Extends the RXM 4.0 slide to RXM 4.5 holster length (Radian’s holster note)
- Material: Barrel hardened 416R stainless steel; compensator hardened stainless steel
- Finish: Black Radianite coating
- Threaded barrel required: No; the Ramjet barrel is included and is not threaded
- Includes: Ramjet barrel, Afterburner compensator, Intra-Lok tapered screw, Torx bit
- Manufacturer part number: R0944
- UPC: 810098421539
- Made in: USA
Who it’s for
Ruger RXM 4.0 owners in USPSA Limited Optics or Open, PCSL 2-Gun, or Tactical Games who want a match barrel and a one screw compensator in one purchase, and who can run an RXM 4.5 length holster.
Who should skip it
If you have the RXM 4.5, this will not fit. If you want to keep your RXM 4.0 holster, skip it; the slide grows to 4.5 length. A cheaper route is one of the threaded barrels we carry for the Ruger RXM (Ruger OEM or True Precision) with a 1/2×28 thread on comp such as the Griffin Micro Carry Comp or Sylvan Arms 9mm comp. Division rules: USPSA Production and Carry Optics do not allow a compensator, and IDPA SSP and CO do not either; IDPA CCP and ESP vary, so check the rulebook.
