GG&G HK USP Slim Line M3/M6 Mount Black. Fits Streamlight TLR-1 TLR-2 and L3 / Insight M3 and M6 Lightweight Mount Full Size Type III Hard Coat Anodized Matte Black Finish Slim Line HK USP GGG-1133SP Specifications for GG&G HK USP Slim Line M3/M6 Mount: Manufacturer: GG&G Color: Black Condition: New Country of Origin: USA Caliber: .250 Savage Package Contents: GG&G HK USP Slim Line M3/M6 Mount GG&G GGG1133SP: HK USP Slim Line M3/M6 Mount Black