Mags?

[SONYtec]

Durability.

I can step on my SS mags and they still work.
And don't weight significantly more than aluminum IMHO.

OP posted about steel mags, not stainless steel.

I agree about the SS mags. They are lighter than the steel ones, thinner is why. C-products SS mags were good.

BTW since the walls were thinner, the follower was a bit different, bigger. so a regular STANAG follower would be loose.