http://www.surplusammo.com/products/DS-Arms-ZM4-16"-Complete-AR%2d15-Upper-Receiver-Assembly-.html I want an upper for the 350-400 range that looks exactly like this but don't know if this company is worth it since there is no BCG included and that I have found no reviews. and it has a funny twist to it. I really want the BCM 16" SOCOM Upper but they're out The AR I'm attempting to build will be 16" and used for plinking/target work and see some boar hunting action a few times a year. I have also found DPMS Lowers pretty fairly priced but can't come to terms with a pencil style barrel I love the look of this barrel so much. Wanna kill these ads? We can help!