RA-Tech, unveiling their latest outer barrel series made of Stainless Titanium, explains that that this can fit not only RA-Tech's own products, but also those of the Marui .45 series of GBB pistols. A version is also available for the WE Airsof M&P GBB Pistol, WE Glock, VFC M&P, and the KSC M9. The Kimber on display is the personal property of Johnny Hsu, the main man of RA-Tech.