Ever heard of echo mode? Usually is about $500 to get on a real steel AR, but ive been able to replicate it on GBBRs! Besides the echo mode, this Wetech gbbr m4 has a cqb ghk rail, replica eotech, working peq box, amplifier, reql steel magpul furniture, and trigger guard, angry gun super recoil kit, maple leaf barrel and 70° autobot bucking. Also have a steel bolt with aluminum ra tech nozzle. Comes with 9 mags. 8 are in perfect condition, 1 has a slight leak which can be fixed with a $4 output valve. Can provide a video of the binary trigger. I am only interested in hpa trades or cash. Willing to negotiate. I WILL NOT BE MAKING ANOTHER