[C1076USMC]

Does anybody know if there are any bigger mags than 10 rounds?

 

[Hal8000]

I've not seen any... It looks like the 10 rounder that comes with it has plenty of room for more rounds. Particularly the way it's partially staggered…

Come to think of it, I don’t remember any mags for the Ruger Mark pistols that held over 10… At least I’ve never seen/had one…