back when my mk4 eyeballs were 20-20 , i didn't worry so much about scopes and optics and i laughed at the old fudds out their with there with the 4-16x 55mm $2,000 scopes trying to shoot a white-tale deer @ 100 yards!
now that i have started to get old all those little injuries to my eyes are taking their toll on me too. i was once death with the old a1 and a2 peep sights , now me and old fudd has got to peer through a scope to hit "the earth'--LOL!
lucky for us the scope world has sort of turned upside down since i last bought one. there are lots of good scopes out there for very modest prices in the sizes that wont slow down a fast sighting ar-15--
i guess we will start off in the middle powered scopes . my favorite of the ones i looked at is--
the vortex diamondback 2-7X -- very good glass and superior field of view. and well below $300 too! like $198 shipped-- only because you can't get the 2-7x viper on sale for $170 no more--LOL!
the burris, 2-7, nikon,and redfield reveloution , are all very nice glass and any of them would be good picks for the LW ar-15 rifle in the mid range scopes.
there might be a better scope than the vortex diamond back in this mag range , just of the ones i looked at it was the top contender .
and i didn't look at every brand of scope in this size and magnification --just the ones that i had heard good things about from other hunters and target shooters.
when the optisan comes in i'll add in a little info on the low $$ 1-4x24 tacticool optics "china quality"--you got to love it--LOL