Best M4/AR-15

[Bean Counter]

Am I missing any manufacturers? Let me know and I'll add the option..

[MuleySniper]

Im going with Rock River, next would be Colt. My cousin is into those AR's, he's had a few different ones and the RR imo is hands down the best quality out of those you have listed.
MS

[huntnphool]

I've only had a few but am very happy with my Bushmaster, so is my little girl

[WildlifeAssassin]

Stag Arms for us left handed shooters.

[Alchase]

I got to go with H and K,

Their G36 and MP5's are the finest combat weapons made.
The SL8-6 is a fine civilian rifle as well.

Oops those are not AR-15s or M4 derivatives

[thinkingman]

I just voted for Rock River, which is my favorite gun to shoot (right now, I tend to spread the love)
Colt fans seem to pay crazy prices, so if I was trading alot, I'd buy a Colt to take advantage.
I guarantee a Colt won't outshoot my RRA Varmint.

[270Shooter]

Stag Arms for us left handed shooters.