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Posted: 2/1/2011 1:36:21 PM EDT
Looking at getting a barrel built for 3gun stuff.

Barrel builder wants specs on rifle length length and port size. I was under the impression that the dimensions are standard - not the case. Can anyone recommend specs?

Barrel would be 18" 223 Wylde chamber 1-8 twist .65 to gas block .75 from gas block to end of barrel. Using a JP Rifle .75 adjustable gas block.

Appreciate any help as I don't know crap about AR's.
Link Posted: 2/1/2011 3:57:48 PM EDT
[Last Edit: 2/1/2011 4:32:12 PM EDT by RedFalconBill]
18" rifle gas?

0.100" to 0.105"

The original SPR's had a gas port of 0.104"
Link Posted: 2/1/2011 4:17:33 PM EDT
Thanks for the response. Length down the barrel?
Link Posted: 2/1/2011 4:26:55 PM EDT
Link Posted: 2/1/2011 4:33:01 PM EDT
Originally Posted By GreenM4Guy:
I wouldnt trust somebody who doesnt know this already to make me a barrel. JMHO


He is in Canuckistan...
Link Posted: 2/1/2011 4:38:07 PM EDT
This is McGowen I'm dealing with threw a third party - Canadian liason. I'm sure they just want to keep me happy. Isn't there a standard milspec dimension for this? Like I stated I'm just getting into AR's so I dont know much other than I'm dedicated in making my own.
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