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BA 12.5 barrel port size...

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BA 12.5 barrel port size...
Schrambo Offline
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Posts: 224
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Joined: Oct 2016
#1
11-03-2017, 03:57 AM
Built a 6.5G BA 12.5 upper with the usual components, Vltor Mur 1A Upper, GB Bolt, Vltor GB(non-adjustable), WMD carrier, and Chandler handguard...

Short stoking with full power loads over 2 trips to the range... Pulled the GB and the port was .055" using a drill bit... Drilled it out (my first time) to .073", and everything is running great...

It's accurate and I'm happy, but has anyone else seen a small gas port on 12.5" BA barrels?
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Messages In This Thread
BA 12.5 barrel port size... - by Schrambo - 11-03-2017, 03:57 AM
BA 12.5 barrel port size... - by just_john - 11-03-2017, 11:27 AM
BA 12.5 barrel port size... - by LRRPF52 - 11-03-2017, 04:18 PM
BA 12.5 barrel port size... - by irishpride114 - 12-09-2017, 06:52 AM
BA 12.5 barrel port size... - by Sticks - 12-09-2017, 11:55 AM
BA 12.5 barrel port size... - by Leadslinger - 12-09-2017, 02:24 PM
BA 12.5 barrel port size... - by Schrambo - 12-09-2017, 02:28 PM
BA 12.5 barrel port size... - by wideglidejoe - 03-13-2018, 08:45 PM

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