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ChrisAK

M4 Extended Tube Spring Question

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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

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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.

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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.

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