With all this barrel changing going on, is it possible with HK? I own a USP .40 Compact. Can I buy a seprate .45 barrel for my weapon, or would I have to buy the entire weapon? If another barrel would work in my slide and frame, would anything else be required? Would the .45 mags fit? I do not want the darn thing to explode in my hands!! Any info would help.
JJC
JJC