Airsoft Canada - View Single Post - Can A JG M4 Gearbox withstand a madbull m120?

RadioMan · April 11th, 2009, 12:31

Hi, I own a JG M4 and I realized that it was a pretty bad gun, compared to the other people's gun's I play with. So I decided to upgrade my M4, and change it into an SPR. I bought several things, such as new hop-up, a tightbore barrel, a scope, etc.

But, I also bought a Mad Bull M120 Spring, to upgrade my FPS to around 400. But now that I think of it... Will my M4's gearbox break under the force of the new spring? If so, what can I buy to make my gearbox withstand it?

April 11th, 2009, 12:31	#1
RadioMan Banned Trader rating Join Date: Jan 2008 Location: Winnipeg	Can A JG M4 Gearbox withstand a madbull m120? Hi, I own a JG M4 and I realized that it was a pretty bad gun, compared to the other people's gun's I play with. So I decided to upgrade my M4, and change it into an SPR. I bought several things, such as new hop-up, a tightbore barrel, a scope, etc. But, I also bought a Mad Bull M120 Spring, to upgrade my FPS to around 400. But now that I think of it... Will my M4's gearbox break under the force of the new spring? If so, what can I buy to make my gearbox withstand it?