M4 problem ?

[beattie738]

ok so my jg m4 just arrived and when i fire it i can here a springy noise when i fire it. it seems to shoot fine is there a problem.

thanks

 

[M_P]

urrm, maybe although it could just be the noise of the gun, if it fires ok just leave it

 

[Finius]

It's probably just a very strong spring; get it chrono tested. I've always found that Chinese AEGs made a very loud springy/slappy noise when you first get them, and usually fire quite high on the chrono, but after a few thousand rounds and a couple weeks storage and use the FPS settles down a bit and the noise starts to blend in with all the other gearbox sounds.