I bought a Hi-Point .45ACP about six months back and it had a few problems at first but after around 100 rounds it stopped jamming and works great but it does not seem to like Wolf ammo for some reason.
And I also got a Hi-Point 9mm carbine that also had a few problems but cleared up after 100-150 rounds.
And here is a great forum for Hi-Point(and any other gun)owners.I think it is CajunBass's forum I know he is a moderator.
http://hipoint.7.forumer.com/
Michael.