had a full sized A2 in .410
mags the size of 30 round GI's would fit 15 .410 shells
I got a picture of the bolt etc etc
1: you cant just buy the upper
1a: because the mags are to big for standard lower mag wells
2: with this rifle, you could swap out the .410 upper for a 5.56, but the mags would wobble in the lower... but it is doable...
3: mucho $$$$