Excellent build quality of course. The metal body is composed of a Steel, Aluminum & Nylon Fiber mix so it definitely feels different than my Classic Army and doesn't get scratched that easily. The external body is solid as a rock and the only wobble or rattle came from the stubby front grip which is a easy fix. The sound from the Noveske flash hider is truly unique and will have your team mate turning to see what the heck it is. Especially with the ultra fast ROF. Really low FPS as to be expected from a true CQB gun, but I dropped in a upgraded Classic Army gearbox instead of altering the stock King Arms gearbox. Compact, but very solid and easy to maneuver worth every penny.
LiPo Power Tube Battery
Easy to tear disassemble body (Almost as straight forward as Classic Army)
VLTOR Upper with cool bolt catch function (search King Arms Troy on youtube)
Very low FPS (mine chrono'd at 280-289 fps)
PMag has a VERY, VERY tight fit