[QUOTE=kimberkid I built one just because I wanted a bit more "thump" at a reasonable ammo cost and more accuracy than an AK can give.
Thats sorta why I got interested in them. That plus I have a small pallet of yugo, brass cased 7.62x39 ammo from back in the day. 8 cents per rd delivered. I've got enough that it is all I've ever shot thru mine so I don't know if the laquer or polymer would be a problem.
I'm not a weapons tech kinda guy, but I always was told that the 7.62x39 is pretty close to a 30-30 with the same wt bullet. My old Marlin 336C shoots real well after you figure out the trajectory thing, so I thought I'd try one.
Don't get me wrong, I like my AKs or I wouldn't still have so many, but the AR is "different", kinda like my M1As are different. All are Good, just different good!
I got the 16" Mod 1 kit and built it pretty much stock, I did put in a Bushy lower parts kit,(FCG), at the time I used them on all my AR builds. This thing is a real hoot! With a red dot plink'in at 100 yds its as accurate as I let it be.
Never being able to leave well enough alone, I decided I needed a full size 20" AR rifle in 7.62x39. Bought from Mod 1 again, built it just like the carbine. Put a 6-24x42mm Mil Dot on it. After sighting it in at 100 yds, with Yugo surplus ammo, off a bag rest, 5 rd groups make the sharpest little cloverleafs you ever saw.
With the Mil Dot scope its not really a problem reaching out to 2 or 3 hundred yds, after you figure out which dot to use. This was one of my better ideas, I'm very happy with both of them and the 20" I built for one of my boys. They all run 100% with the old "frankenmags" or the latest version Cproduct mags. After you have all the 5.56 ARs you want, why not try a few in the odd-ball calibers?
Cleaning for the corrosive ammo is no big deal either. You can get at everything but the gas tube and inside the gas block. I just cork the bbl and force a little soapy water out the tube, its stainless anyway, if it ever goes its easy to replace. My carbine plinker has over 5k thru it with zero problems.
I have some shooting buddies that think anything but 5.56 in an AR is nigh to sacrilege, but they don't think much of my carry 1911 in 9mm either.
Now if you want to really get me talk'in, lets discuss my latest favorite AR caliber, 5.45x39