I don't know if you know but red dots are good for close to medium range targets. Tuning down the red dot (smaller) you may be able to have good shots out to 100 yds. Red dot sights are used for quick acquisition of a target and actually took the place of iron sights when it was first introduced. If your battery takes a dump, all you're going to have is an empty tube unless you can find a red dot to fit your 15-22 that co-witnesses. Hey, you didn't ask for this info now, did you? LOL
Yes, thanks. The UTG medium riser is supposed to co-witness the TRS-25 perfectly.