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AR15.COM
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3/31/2012 1:07:10 PM EDT
I have a M17S that had the barrel cut down 3.5".  It's not cycling low powering ammunition like Wolf but works with XM193.  

Anyone here have this problem?  I assume the gas port needs to be opened a little, any idea on how large it needs to be to cycle wolf?
3/31/2012 1:41:06 PM EDT
[#1]
Id say ask Ken at K&M. He might be able to do the work. If not ADCO.

http://www.kmaerospace.com/M17s%20Mods%20-%20Barrel%20Shortening.html
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