I am building my very first combat ready AR 15. I have already bought a colt socom M4A1 barrel, a Colt BCG and CMC lower parts kit. I am now looking for an upper and lower receiver set to complete the build. I like forged receivers made from 7075-T6 or better. What is most important to me is the fit between the upper and lower and buying online is luck of the draw.
What receiver combo do you recommend to complete my build?
What receiver combo do you recommend to complete my build?