Radian Weapons Ramjet & Afterburner Combo - Glock 48 The Radian AFTERBURNER + RAMJET combo provides recoil reduction and match-grade accuracy in a concealed-carry package. Threadless barrel design allows effortless install/removal for cleaning. Brand: Radian Weapons Category: Handgun Barrels Series: Combo Model: Ramjet & Afterburner Caliber: 9mm Luger Color: Black Material: Stainless Steel Compatible With: Glock 48