Hi DE:
My mini is a ranch model and I originally had a 4x on it, but all the scope did was let me see my misses more closely. The minis can be "accurized" with various stock/barrel/sight modifications, but you would be spending more than you would for an out of the box AR, that would likely shoot better. See
www.clarkcustomguns.com (I think) for info. The mini is alot of fun, but no tackdriver...
Good Luck
CE