Man on a budget, eh? I understand!
I just installed a Bushnell TRS-25 on my 15-22 - have EOTechs/ACOGs on the big toys, but I was trying to put together a (3-Gun style) budget plinker, and the more I read about the TRS-25, the more impressive it sounded, 'specially at $110 (for the
HiRise version).
Impressed with the optic, not so much the HiRise mount - they could have made the mounting screw / clamp a little nicer, but once you have it installed, it gets the job done. I picked up a couple of highly rated, inexpensive risers of varying heights to play with.
http://www.amazon.com/gp/product/B008HKL6L2/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1
http://www.amazon.com/gp/product/B008HKHMNI/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1
The regular TRS-25 can be had for around $89, but I went with the HiRise for the muted Bushnell logo (gold on the regular TRS-25, silver / gray on the HiRise) and the riser.
Yeah, I know the TRS-25 and mount probably ain't Aimpoint / EOTech / Trijicon tough, but for the money?
I've got a friend that has been piggybacking on my research on building a budget 3-Gun practice rig on a 15-22, and he also got the TRS-25 HiRise. He's an Aimpoint owner, and so far, he says he's pleasantly surprised with the TRS-25.