airsofter2210 Posted November 27, 2011 Share Posted November 27, 2011 hi i have a jg m4 and it is doing 383 fps and i need the spring chopping so it is lower than 350 but i do not know anyone who can do it. can any one hlpe me? if you know someone who can do it could you let me know the only thing i do need to say is they would have to come to my house in sheffield to do it. Link to comment Share on other sites More sharing options...
bigshep Posted November 27, 2011 Share Posted November 27, 2011 TBH, you are just better getting a new spring and either putting it in yourself or asking your local site to do it. Should cost about £20 all in. Link to comment Share on other sites More sharing options...
ikarma70 Posted December 1, 2011 Share Posted December 1, 2011 You could just heat one end up with a butane torch and press the end down a little at a time and then requench the metal. This is method i use on dropping power on uk legal limit spring air rifles. Link to comment Share on other sites More sharing options...
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