[The0Executioner]

i have a mossberg 500 12 gauge, in the tactical version. can i convert this to shoot 20 gauge shells?

 

[Jpyle]

It's probably possible after buying a new barrel, mag tube, elevator and ejector assembly but why? A NIB Mossberg 20 gauge can be purchased for less than the parts needed to have a gunsmith do the above, about $250 @ Buds Gunshop.