The USW (Universal Service Weapon) series of pistols developed by the Swiss company B&T AG is a brand-new weapon system. It combines the size of a pistol with the standard caliber of 9x19mm, and integrates a quickly retractable buttstock. The body size of the USW series pistol is only equivalent to that of an ordinary pistol, which is easy to carry and operate. It adopts the widely used 9x19mm pistol bullet, which is convenient for logistical supply and versatility. It integrates a quickly retractable buttstock to provide a more stable shooting platform and improve shooting accuracy. It is equipped with a standard rail for easy installation of various accessories, such as scopes, tactical lights, etc. In short, the USW series pistol is a multi-functional weapon system that combines the portability of a pistol with the shooting performance of a carbine, and is suitable for a variety of service environments.

You need M4X30mm screws and M4 nuts to fix the buttstock