Radian Weapons152744294
Radian Weapons R0877 Ramjet + Afterburner Combo Fits Sig P365 3.70" Black/Gray Stainless Steel$409.95
Availability: In Stock
The Radian Weapons Ramjet + Afterburner combo for the Sig Sauer P365 is a matched barrel and compensator package built for shooters who want real recoil management without compromising concealability. This 9mm system pairs a hardened 416R stainless steel barrel with a precision-machined stainless steel compensator, both finished with Radianite coating for durability, low friction, and corrosion resistance. The threadless design and INTRA-LOK mounting system make installation and removal straightforward—no permanent modifications to your slide, and field cleaning is just a few turns of a screw.
What makes this combo particularly smart for P365 owners: once installed, the Ramjet + Afterburner extends your slide length to P365XL dimensions, meaning you gain full compatibility with XL holster inventory. You're not locked into finding niche gear. Recoil impulse is noticeably softer than the compact 3.1-inch barrel alone, which matters when you're practicing or carrying for defensive use. The tapered locking system—where a screw interfaces with a V-groove machined into the barrel—ensures the compensator times consistently every time you reinstall it, so you're not chasing zero shifts.
Important: this kit is designed for the P365 and P365X (3.1-inch slide). It is not compatible with Sig models featuring a loaded chamber indicator (LCI), since the Ramjet barrel does not include the necessary LCI cut and will not seat properly with that feature in place. The system is legal in all 50 states and comes ready to install on your carry gun.
| Brand | Radian Weapons |
| Model | R0840 |
| Caliber | 9mm |
| Barrel Material | 416R Stainless Steel (hardened) |
| Compensator Material | Stainless Steel |
| Finish | Black (Radianite coating) |
| Mounting System | INTRA-LOK (tapered locking screw) |
| Compatibility | Sig Sauer P365, P365X (3.1" slide) |
| Post-Installation Slide Length | P365XL-equivalent dimensions |
| Barrel Design | Threadless |
No. This combo is not compatible with Sig models that feature a loaded chamber indicator (LCI). The Ramjet barrel does not have the necessary LCI cut and will not seat properly if that feature is present on your pistol. Verify your P365 does not have an LCI before ordering.
This combo is designed for the P365 and P365X (3.1-inch slide). It extends that slide length to P365XL dimensions. It is not designed for the XL model itself, which already has a longer slide.
No. The threadless barrel and INTRA-LOK mounting system are designed for field installation. You simply slide the compensator over the barrel and tighten the locking screw. Removal for cleaning is equally straightforward and requires no tools.
The Ramjet barrel and Afterburner compensator are engineered as a matched pair to work together for recoil management and accuracy in this specific package. Buying the combo ensures you have a tested, coordinated system optimized for the P365 platform.
SKU: 152742907 • Width: 3.4in • Height: 1.9in • Depth: 9.2in • Weight: 0.43oz
Availability: In Stock
The Radian Weapons Ramjet + Afterburner combo for the Sig Sauer P365 is a matched barrel and compensator package built for shooters who want real recoil management without compromising concealability. This 9mm system pairs a hardened 416R stainless steel barrel with a precision-machined stainless steel compensator, both finished with Radianite coating for durability, low friction, and corrosion resistance. The threadless design and INTRA-LOK mounting system make installation and removal straightforward—no permanent modifications to your slide, and field cleaning is just a few turns of a screw.
What makes this combo particularly smart for P365 owners: once installed, the Ramjet + Afterburner extends your slide length to P365XL dimensions, meaning you gain full compatibility with XL holster inventory. You're not locked into finding niche gear. Recoil impulse is noticeably softer than the compact 3.1-inch barrel alone, which matters when you're practicing or carrying for defensive use. The tapered locking system—where a screw interfaces with a V-groove machined into the barrel—ensures the compensator times consistently every time you reinstall it, so you're not chasing zero shifts.
Important: this kit is designed for the P365 and P365X (3.1-inch slide). It is not compatible with Sig models featuring a loaded chamber indicator (LCI), since the Ramjet barrel does not include the necessary LCI cut and will not seat properly with that feature in place. The system is legal in all 50 states and comes ready to install on your carry gun.
| Brand | Radian Weapons |
| Model | R0840 |
| Caliber | 9mm |
| Barrel Material | 416R Stainless Steel (hardened) |
| Compensator Material | Stainless Steel |
| Finish | Black (Radianite coating) |
| Mounting System | INTRA-LOK (tapered locking screw) |
| Compatibility | Sig Sauer P365, P365X (3.1" slide) |
| Post-Installation Slide Length | P365XL-equivalent dimensions |
| Barrel Design | Threadless |
No. This combo is not compatible with Sig models that feature a loaded chamber indicator (LCI). The Ramjet barrel does not have the necessary LCI cut and will not seat properly if that feature is present on your pistol. Verify your P365 does not have an LCI before ordering.
This combo is designed for the P365 and P365X (3.1-inch slide). It extends that slide length to P365XL dimensions. It is not designed for the XL model itself, which already has a longer slide.
No. The threadless barrel and INTRA-LOK mounting system are designed for field installation. You simply slide the compensator over the barrel and tighten the locking screw. Removal for cleaning is equally straightforward and requires no tools.
The Ramjet barrel and Afterburner compensator are engineered as a matched pair to work together for recoil management and accuracy in this specific package. Buying the combo ensures you have a tested, coordinated system optimized for the P365 platform.
SKU: 152742907 • Width: 3.4in • Height: 1.9in • Depth: 9.2in • Weight: 0.43oz