This gun is great! Externally, the G&G mp5s are some of the best. The upper and stock are made out of a nice steal, the lower is of a very nice polymer, and the frontal assembly (gas tube, gas block, and barrel) are made of aluminum. The charging handle, is however, a non oxidized metal which broke on me about 3 weeks after getting it. the safety also stopped locking the trigger back. now I can just pull the trigger back on safe, and it jumps to semi. Internally, I was very impressed. I open my guns after every 15000 BBs for maintenance, and I can't be leave how nice the internals are. 30000+ BBs, and no wear or tear to speak of. It came with a metal ported piston head, which was a big plus, and ball bearing on the spring guide, although the spring guide is plastic. the only things I have changed on this gun is the motor (replaced with a G&P M120 motor), a new cnc air nozzle, and a madbull 6.03 tightbore. I would also recommend getting a PEQ box, because there is very little battery space in the hand guard.
_Very nice internals for the price (metal piston head, low res wiring)
_dead accurate for the barrel length
_blowback is kinda cool, and does't interfere with the gearbox
_shoots about 340 fps, which is perfect for cqb
_easily comes apart to work on
_can very easily be used in woodland games as well as cqb
_Charging handle broke
_Safety is useless
_not the highest ROF stock
_very little battery space
_metal ring on the flash hider is glued on very tight, and I gave up on trying to get it off.
Rating: [4 of 5 Stars!]