I have Bushmaster "Super Duper Varmit Slayer" or whatever you want to call it.It's the 24" stainless heavy barrel. 2 stage trigger,comp.grip. It was the first AR-15 I ever owned or shot. It is a very accurate rifle.Shoot's 1/2" with most ammo.It'll shoot alot better with handloads. I don't think the extra barel length makes it more accurate but it does add a little velocity. I think 10fps. per inch.I was planning on using it as a coyote/ground hog gun,but after purchasing a Savage 22-250,it's now just for coyotes.Now I kinda wished I had a shorter barrel. R Guns has a DPMS 16" Heavy barrel flattop for $599,which looks like it would be a great coyote rifle.If bushmaster offerd on like it I would suggest them but a far as I know they don't. If you want to build on they also have lower recievers for $99(DPMS).I'm not advertising for them .It's just where I've found the best deal on those particular items.Whatever you buy,get a good trigger.The stock ar triggers are terrible. Well that's my 2 cents worth.