What about TI-25 mags for the 10/22? Either the Composite or the Aluminum ones. I know these would be a hit if you could bring the cost down a bit and there is no need to pin them. Especially with all the problems people have been having with the butler-creek ones and the fact that we can't get the ruger bx 25s.
I'd be interested in some glock 17 10/17 mags.
mini-14?
How about original Ruger 20rds mini-14 pinned to 5?
I'd take some G17, 17 rounders pinned as well as a 33 rounder pinned.
Walther ppq full cap mags would be a hot. I I guarantee it.