- APS EMG TTI CNC Combat Master Barrel Slide Set For SAI BLU Series APS ACP601 Tokyo Marui G17 GBB Pistols- Made out of Precision CNC finished aluminum alloy.- Engraved "TTI" logo. - Weather resistant black anodized finish.- Slide lightening cuts and facets provide an overall improved recycle rate.- Front fiber optic sight and steel rear sights.- Slide , Front and Rear Sight , Outer Barrel , Inner Barrel , Hop-Up Chamber , Hop-Up Bucking and Mock Extractor.- -12mm CCW counter-clockwise inner thread for compensator or adaptor.- Outer Barrel - 132mm/135mm- Inner Barrel - 125mm- Suitable for EMG SAI BLU Series GBB Pistols.- Compatible with APS ACP601 / Tokyo Marui G17 GBB Pistol.- Color - Black/Silver- Weight - 202g- Original Packing