My Thompson shipped from Buds yesterday, I should be picking it up on Monday.
I plan on getting several 20 round mags and modifying the mag catch to use them. Once the catch is modified, the 30 round mag that comes with the rifle will not be of any use to me.
If any of you are altering the mags to work with the catch rather than the option I'll be using, I'd be inerested in trading my 30 round mag for an unaltered 20 round mag. I would also be willing to sell the 30 round mag.
Like an idiot I modified all my mags years ago. If I had it to do again I'd have modified the latch.