I recently bought a USP Expert in 9mm. I have taken it to the range twice, and put about 250 rounds down the pipe. I'm not going to say I have been disappointed, but its not as amazing as i would have hoped. Hopefully someone has some input to help me get the most out of this gun. I have two major concerns. First, I thought the black-on-black sights wouldnt bother me, but they are such a pain in the ass. I really want to change the front sight out for Fiber Optic or something. What size of front post do i use? Supressor height? regular height? Or from a different company? Second, I have noticed the brass extraction is really weak. The brass basically dribbles out of the gun. I have had a few cases even land on my wrist or fly directly over my head. I hate this. Of all the HKs i've owned(3) this has never happened and for a 1200$ gun i expected better. Do i need to replace a spring or an extractor? Im no gunsmith so i really have no idea what needs to happen to fix this.