sorry deckard, for some reason i thought you owned one because the pics you have been including look like personal digital snaps. i still would like to know the frequency of jamming for hi point as that is one of the biggest conciderations one would have to concider prior to purchase.
There's a reason for that -- those pictures were taken for my publication and hotlinked here without attribution. I reviewed the Hi Point 9mm carbine in my magazine,
The Martialist. The original test was out of the box and appears here:
http://themartialist.com/0604/hipoint.htm
Some time later I borrowed that same Hi Point to take a four-hour carbine class with it (through Progressive F.O.R.C.E. Concepts). Most everyone there was running AR15s, some of them sporting a wild assortment of gear and supporting vests and rigs. One fellow had an AK (complete with barrel-clamp-Brinkman MaxFire flashlight!), one fellow had a Ruger Mini 14 (at least I think it was a 14 and not a 30), and one fellow even had a Beretta Storm (which seemed to give him quite a few problems -- worth considering for anyone contemplating the Storm).
I ran, for the whole class (expending something like 300-400 rounds), that Hi Point 9mm carbine with a magazine carrier on the buttstock and two extra mags stuck in the pockets of my 5.11 vest. Would you believe that ugly cheap gun worked and worked and kept on working, giving me no problems? I had one malfunction -- ironically, during a failure to fire drill! -- when the last round in the magazine didn't strip out of the mag and got stuck in it, leaving me with nothing to do but change out the almost empty magazine. The rest of the time that Hi Point just kept chowing down on Winchester White Box with nary a complaint. I don't think the barrel got completely cool for, like, two and a half hours, as during that time it never had the chance to go unused for long enough to manage it.
Now, the gun does have some very rough edges and I cut up my hands pretty good on the gun and the magazines over the course of the class. That buttstock carrier also did me no favors during some of the less standard fighting positions, as it proved awkward on one side. Still, the weapon performed remarkably well (and, as I said, outperformed the Beretta Storm that was its closest equivalent).