Features: Strong and satisfying felt recoil impulse Adjustable Hop Up Double action trigger USP GBB Pistol User Manual Specifications: Length: 190mm Weight: 728g Power Source: Green Gas FPS: 290 About the USP: The USP is also a cultural icon having been featured in movies and TV shows such as HEAT and 24. This Green Gas GBBR version of the gun is a reproduction of said pistol. It comes with a 25rnd magazine and clocks in at around 290 fps. Tokyo Marui: Tokyo Marui Co. Ltd is an airsoft gun and toy cars manufacturer located in Adachi, Tokyo, Japan that produced the AEG. The guns are principally sold in Japan, but are also sold worldwide. They were the first company to produce airsoft guns powered solely by electric-motor driven air compressors, which they called "Automatic Electric Gun" (AEG) in 1992. This compact air compressing system was implemented in their first battery-powered automatic firing replica, the FAMAS F1. Other airsoft guns were then introduced. The AEG system is still in use, and has been copied numerous times through the years by many other airsoft gun manufacturers. Includes: Tokyo Marui USP GBB x1 Green Gas 25 Rnd Magazine x1 Instructions Manual x1 Under Rail x1 This product is only compatible with gas designed specifically for Airsoft guns. Do not use lighter fluid or butane gas, as that will cause permanent damage.