It's HFC. The compensator comes attached. Don't think, to the best of my knowledge that it's avaliable over here, but it is in stock in a fair few major HK shops, and at a decent price (only prob at the min being the weak Pound ). Also, notice the spider web logo on the grip, a key indicator that it's HFC
Here's a link, http://www.dentrinityshop.com/pr_list.jsp?...HAG&bid=HFC
Decimus.