I have a Burris Speed Dot,that I have used on my AR,,and it works VERY good on that particular rifle,,its a Flat Top,so it goes right on. I can't see why it wouldn't work on a M-14/M1A,,if you have the correct mount. You can get them for around $155 or so plus shipping. I bought mine from www.natchezss.com Also check out www.dansshootingsupply.com he is a member here,and probably can get you a very good price also. Its not a AIMPOINT,but it works good enough for what I need it for.Good luck in your search. www.burrisoptics.com/speeddot.html