The Radian Weapons Afterburner + Ramjet Combo for Sig Sauer (R0840) is a performance-oriented barrel and compensator upgrade engineered to drastically improve the shooting experience of your compatible Sig Sauer pistol. This matched Afterburner™ micro-compensator and Ramjet™ barrel combo delivers industry-leading recoil reduction, exceptional corrosion resistance, and match-grade accuracy in a compact, concealed-carry-friendly package.

At the heart of this combo, the Ramjet™ barrel is a match-grade, fluted design with a gas-sealing chamber and DLC-enhanced hardened 416R stainless-steel construction that increases durability and helps protect against port erosion. Coupled with the Afterburner™ micro-compensator — machined from hardened 17-4 stainless steel with a DLC coating — the system maintains low friction, high hardness, and lasting finish integrity.

Thanks to Radian’s INTRA-LOK® taper-lock mounting system, installation is simple and repeatable with no shims or threadlocker required. The threadless design allows effortless barrel removal for cleaning and makes this upgrade legal for sale in all 50 states. Angled front faces on the Afterburner™ also aid in smooth holstering and real-world carry.

Whether you’re building an accurate, low-recoil defensive pistol or enhancing your concealed-carry setup, the Afterburner + Ramjet combo delivers tactical performance and premium materials straight from Radian Weapons.

This product is NOT compatible and will not function with SIG SAUER® P365-XMACRO™ COMP slides (OEM integrally compensated slide).

This product is NOT compatible with Sig Sauer models that feature a loaded chamber indicator (LCI). The RAMJET™ barrel does not feature a cut for the OEM LCI and will not seat with it in place.