I have a Colt .22 m4 that I want to sell or trade. It has a quad rail as well as Magpul furniture. I also have a bi-bod front grip, sling, and the factory carrying handle with iron sights. Also have 3 mags, 2 30 rounders, and 1 20 rounder. I have put a few boxes of cci blazer threw it and the gun shoots great. very fun to plink with. right now the gun has a nice red dot mounted on it but i plan on keeping that unless you are willing to pay a little extra. asking $650 with out red dot. i would trade for a Ruger 10/22 plus some cash.