Rock Island "full size" vs "mid"

[Hacker]

Are the frames of the full size Rock Island Armory and the Commander-length different in the dust cover area?

Could a Commander slide and barrel be installed on a full size frame?

[3006mv]

Hi, I know this is an old thread but I thought I would reply by linking this one if you are still interested http://forum.m1911.org/showthread.php?p=77122#post77122 Has anyone out there tried swapping a 5" slide/barrel w/ the 4" slide/barrel on their RIAs?