Tags: usp expert
Adding an O-ring engagement to a USP-SD
The O-ring engagement was among a few of HK's innovations with the USP line of pistols. They claim it provides better accuracy by allowing the barrel to fully lock up with the slide. There is some debate to the validity of the claim, but nonetheless,… more »
Price of HK guns and accessories
There are many factors that determine the price of HK guns and gear. What makes them so great? more »