AP-15 Complete Lower w/ buttstock and all parts [AP-15 Complete Lower w/ M4 Stock] - $199.00 : New Frontier Armory - Firearm Sales, Transfers, and Consignment An Aero Precision lower, complete. $199. With a BCM SS410™ 16" Mid Length Upper Receiver Group 1/8 Twist BCM Complete upper, 5.56 NATO $489. I would need to get handgaurds and mags also, but would this make a good inexpensive ar-15? Is there another company for uppers that are very reliable but less expensive than BCM? I'm on a pretty tight budget but I really want an ar-15. If anyone has any specific builds that would cost less than this and make a good reliable ar-15 (im not really concerned about accuracy, as long as its within 3 moa) I would be more than happy if you would post them, and some links Thanks. Edit: PS I am not against building the AR my self, so if that is what it takes to get one cheaper than I am all for it.... Just tell me what all I would need because I don't know all the parts necessary.