Cooper M16 magazines

[RCS]

I have a single 20 rd Cooper manufactured M16 magazine which I understand
were rejected by the US Govt and contract cancelled. My question, did Cooper
also manufacture a 30 rd magazine too ?P1010006_0006.jpg

[lyman]

I'm fairly certain they did make a 30 round, but I would need to dig thru my stash to verify

[BEAR]

To my knowledge, Cooper only made 30 round magazines post Vietnam......and not very well. The military canned them.
You may have the Cooper magazine plate on a 20 round magazine, they all fit each other. Any stamps on the magazine body?

BEAR

[RCS]

BEAR, you are correct. my error, my photo shows a 30rd magazine with the Cooper magazine plate.

I am keeping it as a sort of collectors item

Thanks for your post