NO TRADES WHATSOEVER! Siegtek 8 tooth dsg gearset, gen 1 btc, retro arms gen 1 shell, retro arms trigger. Echo 1 one piece cylinder set, m170 spring, modify tappet, retro arms qd spring guide, swisscheese shs piston, pom piston head, shs nozzle. Shoots 320 FPS at 45rps. The retro arms gen 1 gearbox shells were originally designed for G&P bodies (no idea why). So it has shaved down to fit into Tokyo Marui style gearboxes. It however has not compromised its strength. You can see a shooting video of it on my Instagram which is: Blitzkrieg_airsoftv2