I have one like that, and thought that was agd's first version? I also have the blem version that you picture as well. The pump kit in question is much smoother in pump stroke than the blem.
it's agd; my friend has one like that and he bought it from them. there were apparently two different versions...one with a round block and one with an oval block. i installed my friend's kit onto one of my minimags for a pic:
you'll clearly see the round rod and front block match your kit in question. 100% agd! if you need a pump rod, lemme know, i still have a few left.
I'd love to get an AGD pump kit. Or any mag pump kit, for that matter.