CYMA Sport M4 Carbine Airsoft AEG (Model: 11" KeyMod Handguard / Go Airsoft Package)

"Great price, great out of the box performance, however these guns come with a mosfet installed which isnt mentioned in the specs. Another plus? nope. These mosfet units are pretty bad, and are known to crap out suddenly for no reason. I got maybe 8 games through mine before the mosfet died. I hope you know how to install a new mosfet or trigger harness because if you don't you're sol.

aside from that, the RIS rails have a generous quality control guy as some of the spacing on mine was off.

I'd still buy it.

"This item with the whole system to access the hop-up adjustment all taken apart and the springs stretched so I couldn’t even put it together if it wasn’t for that I would say it could’ve been a good gun.

"Pros-
Microswitch mosfet
Mosfet makes a noise when you plug the battery in
Aluminum cylinder (non ported)
8mm bushings
QD spring guide
Pretty good inner barrel, 150ft plus out of box
Metal buffer tube
Metal outer barrel
Lipo ready
Lower receiver requires modification for a after market adjustable trigger
Low overall weight



Cons-
slow out of the box rps
Plastic cylinder head
Compression is subpar
Fake ambidextrous safety selector
Fake ambidextrous magazine release
Upper and lower receiver made of crappy plastic
Motor plate cracks easily
Pain in the butt to remove gear box out of lower receiver without modification
Threads strip after a few months of use