Chops Posted July 8, 2015 Share Posted July 8, 2015 I'm running an Echo 1 RPK and its shooting a little hot, I'd like to put it just under 400, like 360-380. I already swapped the spring for a M120, and its still shooting hot.Is there anyone who could help me swap (a) spring out, and tell me what kind of spring to buy? I was looking at a M110 or an M100.Someone get with me if you can do it, or know someone who can. I tried Dave here the tech, and didn't hear from him. Quote Link to comment Share on other sites More sharing options...
targetpractice Posted July 9, 2015 Share Posted July 9, 2015 (edited) Get an M110. M120s will shoot about 410-420 in my experience. I've found that most springs will break in with about 2000-3000 rounds and drop about 20-30 fps if you have the time to do so. Edited July 9, 2015 by targetpractice Quote Link to comment Share on other sites More sharing options...
Chops Posted July 10, 2015 Author Share Posted July 10, 2015 Thank you! Still looking for someone to do the change... Quote Link to comment Share on other sites More sharing options...
targetpractice Posted July 16, 2015 Share Posted July 16, 2015 Where are you located Chops? That would be most helpful. Quote Link to comment Share on other sites More sharing options...
Chops Posted July 24, 2015 Author Share Posted July 24, 2015 I'm located in Columbus. I would hope someone can help. I don't have the spring yet, because im not sure anyone can do it yet. Quote Link to comment Share on other sites More sharing options...
civey Posted July 24, 2015 Share Posted July 24, 2015 Chops. Get the spring. Some one will do it (for a small fee). But a couple techs live close by you Quote Link to comment Share on other sites More sharing options...
Chops Posted October 22, 2015 Author Share Posted October 22, 2015 Bump. I have the spring. Who are the techs? I messaged one several times and he never got with me Quote Link to comment Share on other sites More sharing options...
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