ChrisAK Posted November 25, 2008 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
Unobtanium Posted November 25, 2008 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
sneakerfreak602 Posted November 25, 2008 Posted November 25, 2008 According to most on this website no replacement of spring is neccasary with a stock mag ext. Quote
Duggan Posted November 25, 2008 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
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