Hello I’m Looking For A Barrel For My H&k Usp Compact. I Own A Usp 40 S&w Compact. H&k Now Sells The Usp Compact In The New Cal. 357sig. I Like To Buy A Barrel To Change Out My 40 S&w To The New Hot Round 357 Sig. Dose Any One Have Information On Were I Can Get This Barrel? Thanks