FNH USA FN PS90 Gen 2 CarbineUSG Model 5.7 X 28mm Factory Black with USG Secret Service Reticule. The semi-auto PS90 is similar to the standard fully automatic P90 used by the U.S. Secret Service it has a revised optic system developed based on input by the U. S. Government and other government agencies. Essentially, the aluminum USG Black sight uses a 100% black reticule that does not require 10% ambient light. The USG Black reticule does not suffer from the same problems as the regular PS90 factory sight, since the reticule does not "wash out" on bright surfaces. The FN PS90 is a compact, lightweight and completely ambidextrous firearm capable of fulfilling numerous securities, personal defense, competition and sport shooting roles. The 50-round box magazine runs horizontally across the top of the receiver, while fired cases are ejected downward where they cannot interfere with the user. The PS90’s civilian legal 16.04" barrel with integral muzzle brake, dual magazine latches, cocking handles and an innovative black synthetic thumbhole stock with a molded-in sling attachment point and semi-automatic closed bolt operation give’s the PS90 outstanding accuracy, while the non-magnifying optical sight makes it easy to locate and stay on target. Specifications: Manufacturer: FN Herstal Mfg. Item #: Model: PS90 USG Trigger: Gen 2 Trigger Pac Caliber: 5.7 x 28mm Capacity: 50 Rd Magazine Barrel Length: 16.4" Twist: 1:9 RH Overall Length: 26.23" Weight: 6.39 lbs Sights: Adjustable Front and Rear Sight Stock: Black Synthetic Thumb-Hole Stock Finish: Black