Let's see if I have learned how to post pics...
The mag on the left, with bullets inserted, is the mag that came with my Colt 6731. It's a 10-shot (or is it 9?) with some sort of black plastic deal on the bottom, stamped Colt on the bottom.
The mag on the right is a no name mag with nothing stamped anywhere.
I have zero problems with the Colt 10 rnd mag.
The last time I tried to shoot with the mag on the right, (either it or its brother Mag #2) it failed to fire every third shot or so.
But when I tried to manually cycle it by loading 5 rnds at a time, the failure rate decreased and it took 3 cycles before the rifle did this:
When I was firing (instead of manually cycling) the bolt might not travel even that far.
I assume the prob;lem is my no-name mags. Yeah I bought them before I read the FAQ. My bad.
My question is, in the picture on top, the ways the lips are configured looks different. The no name mag has metal in places the Colt doesn't, and there's a bend at the front that the no-name doesn't have.
I was thinking that with the judicious application of some tool, maybe even a file, I could try to shape it more like the Colt.
OR should I just fill them with concrete or epoxy and use them for rifle holders?