[LumberJack53213]

Can you use a 30 round mag on that Kel Tec SU 16? If so, they look like a good bargain.

[Who is John Galt?]

I think the SU16 will accept any .223/5.56 AR15 mag. Not that it’s an issue for most folks, but I don’t think the little 10 round (or whatever they are) SU16 factory mags will work in AR15s, without modification.

[Emmett McCarthy]

Yes, the mags are interchangeable with all AR-15 mags. It came with 2 10s and I added a 30.