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Posted: 10/20/2003 11:16:44 AM EDT
Do you still need them if the barrel is already on the upper reciever( factory insatled)? and how exactly do use the gauges on a semi auto rifle? I know on a bolt action the bolt closes or it doesnt, Im confused on how this works on a semi auto rifle sience the bolt always closes.
Link Posted: 10/20/2003 1:43:56 PM EDT
Headspace SHOULD'VE been checked at the factory. I don't know anyone who doesn't atleast check the headspace before shipping a completed upper out. As for how to use them: [url]http://www.combatsimulations.com/ar15/build.htm[/url] All you really need is a go gauge and a field gauge to check for safety. Usually only the factory is concerned about the no-go gauge. They don't want to ship you a rifle that is borderlining the field gauge and will be unsafe after 1k rounds.
Link Posted: 10/21/2003 11:47:11 AM EDT
Ugh.. I fuggin hate the terms Go and No-Go.
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