Stinger I practice quite a bit with open sights on 22s and air rifles just to stay sharp. I did put a scope on my mini and it lasted about 15 minutes before I removed it. I didn't like the weight or the bulk. Plus I have several scoped rifles if that much precision is needed.
I bought the mini for the same thing a lot of AR user bought theirs for. Home defense and and a close range (200 yard or less) battle rifle. I can hit a mans chest from a field rest at 200 yards and thats good enough for what I want it for. I can hit a 13oz coffee can at a hundred yards just leaning against a tree and thats a head shot at that range. Again good enough. Scopes are not the best for shooting across a living room at a BG. My two SKS rifles, my Winchester 1200 and Marlin Camp Carbine are all possible HD guns and have basic sights.
The last time I shot the mini I lined up 6 two liter coke bottles full of water at 90 yards. I went down the line and knocked over 5 bottles. One bottle didn't fall till the 3rd shot hit it. The FMJ bullets didn't produce much shock. I lined up all 6 bottles with the entry hole pointed up. If all eight shots fired would have been on one bottle the group would have been under 2". I was using a small oak tree to rest my left hand on. That will do for what I want it for.