Kevinfreem
New member
Hey guys. One of my dream guns has been an HK USP in .45. Wife of the year bought me one for birthday and mentioned that the barrel could be swapped out for a .40 S&W barrel and the gun could switch to .40 easily. I was not aware of this but Im a bit leery of just ordering one. There is not a lot of information online about switching like that so I was wondering if anyone has done this before or has similar experience. Does it require different magazines as well? I wouldnt mind switching them out as I love shooting .40 as well but I dont know if i want to pull the trigger so to speak without knowing what might happen to the gun as a result.