My first complete build. Mega upper, Mega mfg Stinger lower, RRA barrel and bolt group from Legal Transfers. RRA lower parts kit and buttstock from Equipment Exchange. Went together fine, can't wait to try it out.
Tried it out today. This thing sure shoots sweet, groups are half the size of my Bushmaster. Had to adjust the rear sight 2 clicks from center. Went through about 75 rounds and not one malfunction.