Airsoft Canada - View Single Post - G&P M4 Issue

davidz58 · February 6th, 2012, 20:37

Hello All,
Hope someone can chime in and give me some ideas where could be wrong.
I recently purchased a new G&P M4. I had the a new spring swapped in to lower the FPS, it was a M90 spring.

Yesterday I took the gun out for a game, it chrono'd at 180 to 190. Later I chromed it at about 300... and then again it chrono'd at 180 ish.

What could be causing this inconsistency? Is the spring a poor fit for this gun?

Thanks in advance

February 6th, 2012, 20:37	#1
davidz58 Trader rating Join Date: Dec 2011	G&P M4 Issue - FPS 180 ~ 300 Hello All, Hope someone can chime in and give me some ideas where could be wrong. I recently purchased a new G&P M4. I had the a new spring swapped in to lower the FPS, it was a M90 spring. Yesterday I took the gun out for a game, it chrono'd at 180 to 190. Later I chromed it at about 300... and then again it chrono'd at 180 ish. What could be causing this inconsistency? Is the spring a poor fit for this gun? Thanks in advance