I have two - a Russian and a Hungarian, both military issue 7.62 guns. The grip angle isn;t "wrong", it's just not typical of most guns made in North America. It works just fine and actually helps with a faster reset for the SNAPPY 7.62 cartrige. Also the sigs are to hard to see. They're actually quite high profile for a military pistol.
They are also very tough.
That being said, don't expect it to match a current production SIG or a $1000 1911 accuracy from these. They will generally shoot to POA and print groups as large as 6" at 25 yeards off the rest. Mostly this is due to generous barrel bushing tolerances meant to increase reliability in the mud & dirt of a battlefield.
The post-war ones seem to be a little more accurate but the wartime ones look way cooler and usually also have either a thin finish or little finish at all given the hard use they saw.