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bwhited
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Posted: 4/2/2013 6:18:03 PM EST
Thinking of cutting a Colt barrel down to 10.3 for a MK18 build. Was wondering if the gas port size is any different on the factory MK18 then a standard Colt 16" barrel???
cmcflex
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Posted: 4/2/2013 7:04:52 PM EST
The 10.3" barrel has a slightly larger gas port, somewhere in the 0.07 range. Not sure about the 14.5", but a search will probably lead you to the answer.

http://www.dtic.mil/ndia/2003smallarms/john.ppt
bwhited
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Posted: 4/2/2013 7:23:21 PM EST
That's what I was looking for. Thanks much!!!
Industry » Colt