Have one of the new colt Umarx government railguns and so far it shoots very well. Been running CCI standard Velocity( got about 500 through it) and haven't a any trouble other than it shoots an inch to inch and a half low at 50 feet. Not as accurate as my Ruger Mark 2 but that has been reworked into a match target pistol. Went with the railgun so i can mount a reddot on it, the gold cup model has adj. sights.