Yes, the USP .45 and custom combat .45 has the same bbl. The Tactical has a threaded one. If you are looking for one should post over in the want to buy area of hkpro.com (forum area). You should have some luck there...
Results 1 to 2 of 2
Search tags for this page
custom usp barrel,
threaded barrel for hk custom combat,
usp custom combat 45
Click on a term to search for related topics.