Well for the low end and I mean bare minimum I would start at Primary Arms. They have some decent knock off Aimpoints for a range gun that would be perfectly fine. After that I would look at the Vortex Red Dot and the Vortex Sparc both decent red dots for the price. Next step up would be a Aimpoint or EO Tech. If a little magnification is what you are looking for then a Primary Arms 1-4x24 with a illuminated reticle or a Millett DMS-1 would fit the bill. Both can be used as a red dot at 1x then used for some reach out and touch someone at 4x. Both are 30mm tubes and would make a good scout type set-up with a rail extender to bring the scope back to you a small amount.
Last edited by Sniper Cowboy; 01-26-2011 at 18:19.