The GG&G HK USP Flashlight Mount Adapter was designed in-house at GG&G and remedies a common problem with the excellent HK USP pistols; the molded-in rail only accepts HK's proprietary weaponlight. The adapter from GG&G allows for greater flexibility when choosing a weaponlight. With the adapter rail installed, the operator may mount the Insight M3X/M6X, Streamlight, or Surefire weaponlights. The GG&G HK USP Flashlight Adapter consists of a three piece lightweight aluminum adapter that easily clamps over the existing USP light rails. The installation only requires a small wrench. The rail fits tight enough to retain zero of the TLR-2 and M6 laser. The GG&G HK USP Flashlight Adapter is precision machined from solid billet 6061 T6 aircraft-grade aluminum alloy. It is then Type III hard-coat anodized matte black per mil-spec for combat-grade durability.