Radian Weapons R0876 Ramjet + Afterburner Combo Fits Sig P365 3.10" Black/Gray Stainless Steel

The Radian Weapons Ramjet + Afterburner combo for the Sig P365 is a matched barrel and compensator system designed to reduce recoil and improve shot-to-shot repeatability in a compact carry gun. This combo pairs Radian's Ramjet match-grade barrel with the Afterburner compensator—both forged from hardened stainless steel and coated in Radianite Black for corrosion resistance and durability. The 3.10" barrel fits the standard P365 slide, and the threadless design means you can remove the barrel from the slide for cleaning without tools or permanent modifications.

What makes this combo stand out for carry shooters is the engineering underneath. The Afterburner's angled front surfaces are cut to assist holstering—a thoughtful detail for everyday carry. The Ramjet barrel incorporates a gas-sealing chamber and loaded-chamber indicator, so you've got the feedback you need at the range or in the field. Both components are treated to resist erosion from muzzle blast, which matters if you're putting rounds downrange regularly.

Installation uses Radian's INTRA-LOK mounting system: you slide the compensator over the barrel, thread the taper-lock screw, and tighten. The tapered screw interfaces with a V-groove on the barrel, self-timing the compensator as it seats. No gunsmith, no guesswork, no permanent modifications. And because there's no threading on the barrel itself, you can swap barrels in and out for cleaning or maintenance without stripping anything out.

This combo is legal to own and use in all 50 states. If you're looking for a way to manage recoil on a P365 without sacrificing the gun's concealability or adding unnecessary bulk, the Ramjet + Afterburner gives you match-grade accuracy and recoil control in a platform built for the holster.

Key Features

• Match-grade Ramjet barrel with gas-sealing chamber and loaded-chamber indicator
• Hardened stainless steel construction with Radianite Black coating for corrosion resistance
• Afterburner compensator with angled front design for smooth holstering
• INTRA-LOK tapered taper-lock mounting—quick install and removal, no threading
• Threadless barrel design allows easy removal from slide for cleaning
• Fits Sig P365 with 3.10" barrel
• Legal in all 50 states

Specifications

Frequently Asked Questions

Will this combo fit my Sig P365?

Yes. The Ramjet barrel is 3.10" and designed specifically for the Sig P365. The Afterburner compensator mounts via the INTRA-LOK system onto the barrel and works with the P365 slide.

Do I need a gunsmith to install this barrel and compensator?

No. The INTRA-LOK mounting system uses a tapered locking screw that you tighten by hand—no special tools or gunsmith work required. You slide the compensator over the barrel, insert the screw, and tighten. The barrel itself is threadless, so removal from the slide for cleaning is straightforward.

Can I use this for concealed carry?

Yes. The Afterburner's angled front surfaces are designed to facilitate holstering, and the combo maintains the P365's compact profile. The system is legal in all 50 states.

What's included in the combo?

The combo includes the Ramjet match-grade barrel and the Afterburner compensator. Both are finished in Radianite Black stainless steel and come as a matched set with the INTRA-LOK mounting hardware.