A semi-automatic handgun chambered in 9mm, this Glock G45 is a crossover, made with the full-size frame of the Model 17 and the compact slide and barrel assembly of the Model 19. This pistol offers smooth unholstering and operation. The Modular Backstrap System ensures a good fit for users of all hand sizes, while the stippled grip reduces slippage. The frame is made of polymer and features rough textured technology for added durability, and an integral Universal Glock Rail forward of the trigger guard makes for the easy addition of accessories. The Glock Marksman barrel on this G45 features polygonal rifling.