ChrisAK Posted November 25, 2008 Share Posted November 25, 2008 Regarding the one piece extended tubes for the M4, what is the appropriate length spring required for this? Where can you find/order them? I do not imagine that the original one that came with the shotgun/plug will work. Any help is much appreciated. Chris Quote Link to comment Share on other sites More sharing options...
Unobtanium Posted November 25, 2008 Share Posted November 25, 2008 Regarding the one piece extended tubes for the M4, what is the appropriate length spring required for this? Where can you find/order them? I do not imagine that the original one that came with the shotgun/plug will work. Any help is much appreciated. Chris M1S90 military spring, Brownells stocks them. Quote Link to comment Share on other sites More sharing options...
sneakerfreak602 Posted November 25, 2008 Share Posted November 25, 2008 According to most on this website no replacement of spring is neccasary with a stock mag ext. Quote Link to comment Share on other sites More sharing options...
Duggan Posted November 25, 2008 Share Posted November 25, 2008 The standard spring seems to work for 95% of people. If it doesn't, the m1 spring apparently fixes the issue. If only all problems were so easy/cheap to solve. Quote Link to comment Share on other sites More sharing options...
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