Having owned quite a few Hi Powers since the '60s, I would recommend one of the MKIII variations, most of which are marked "Made in Belgium, Assembled in Portugal". They have more usable sights and thumb safety as received, straight feed ramp (said to improve reliability with JHP ammo), a redesigned ejection port(said to resist cracking of slide in that area), etc. These will be found with forged or cast frames. Just good all around pistols IMHO. All of my Hi Powers, from a ratty old WWII INGLIS, pre T Series, several T and C Series, to 2009 commercial production, were very good guns. But for a Hi Power to be actually used, rather than just collected, the MKIII is hard to beat. I'm down to just three Hi Powers now. A 1981 GP, '66 T series, and an '89 MKIII. I've seen CDI sales spoken highly of as a source for surplus Hi Powers.