Hi Sodapop,
New guy on here but yes you can, have to do a bit of filing but its not bad. I just put one on my mini 14 ranch, much better !! I just did a search and found a few sites, selling MI carbine rear sights, got mine from Nick Dailey. Check out the Perfect Union BBS, Lots of Mini 14 knowledge there, they helped me with mine, Great bunch of folks !!!. A company Called ASI sells one that is ready to go, but its a bit pricey in my opinion, like 60.00. I gave 35 for mine including shipping and did the file work myself. Mine was a milled sight a opposed to the stamped sight. If I can help you any please let me know.