The Radian AFTERBURNER + RAMJET combo provide unprecedented recoil reduction and match grade accuracy in a concealed carry package. The threadless barrel design allows for effortless install/removal for cleaning. The AFTERBURNER compensator is machined from hardened stainless steel and the RAMJET barrel from hardened 416R SS both are enhanced with a Radianite coating. This combination kit is for: GLOCK G19 GEN3