Yeah, they work fine in my su16. But not in my ar15 and in my ak with a canis adapter. In the later 2, i think the bolts are coming in contact with the top of the mag. So im not getting full battery on every round and i mean every round, frustrating.
But i can see that they might be a problem in some su16.
Hell if you dont have any hexmags buy one there cheap, try it out. If it dont work
Throw it away lol.