The hot selling Glock 17 Gen 4 Gas Blowback Pistol from Tokyo Marui has been shipping again to retailers last month and Mach Sakai got one from this batch to see its externals which is said to be accurate in dimensions and able to fit in most, if not all, holster made for the Glock 17 pistol. He also checks it for magazine drops, shooting, and a performance test ina  steel challenge.