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Best Military Grade 5.56 head space gauge to buy Login/Join 
blasto
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I was unable to locate a prior discussion I saw on which gauge is the best to buy no-go type which did not require bolt dis-assembly for 5.56 bolts. Any opinions, Brownells/Midway.
 
Posts: 971 | Registered: January 21, 2008Reply With QuoteReport This Post
arcwelder
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Maybe one exists, but I'm not familiar with any headspace gauges that let you close on a complete bolt. I'd be interested if such a thing exists, but I think you'll be going after a gauge with a grinding wheel if you want to close a bolt with the ejector and extractor.

If you only want to buy one, it's the field reject. the go and no-go guages will depend on what your chamber actually is. But saami or nato, field reject is bad.


Arc.
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Posts: 27124 | Location: On fire, off the shoulder of Orion | Registered: June 09, 2004Reply With QuoteReport This Post
hrcjon
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The official gauge (M16 Maximum Headspace Gage, Ordnance Part Number 7799734, NSN 4933-00-070-7814) has a cut to make it usable on a complete bolt. I have not seen one for sale is quite some time. I personally just mill the commercial gauges (a project any good machinist can do for you in about a minute, I do it on a small home mill) so you don't have to disassemble the bolt.
Not that disassembling the bolt is a big project, it just irritates me. i have written to all the normal gauge suppliers saying there is a market for a real clone of the official gauge but obviously they don't think so.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
 
Posts: 11259 | Registered: October 14, 2004Reply With QuoteReport This Post
lyman
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quote:
Originally posted by hrcjon:
The official gauge (M16 Maximum Headspace Gage, Ordnance Part Number 7799734, NSN 4933-00-070-7814) has a cut to make it usable on a complete bolt. I have not seen one for sale is quite some time. I personally just mill the commercial gauges (a project any good machinist can do for you in about a minute, I do it on a small home mill) so you don't have to disassemble the bolt.
Not that disassembling the bolt is a big project, it just irritates me. i have written to all the normal gauge suppliers saying there is a market for a real clone of the official gauge but obviously they don't think so.



this, and the USGI 7.62 and 30.06 gauges are cut as well,


may try ebay,


https://chandlersfirearms.com/chesterfield-armament/
 
Posts: 10668 | Location: Beach VA,not VA Beach | Registered: July 17, 2007Reply With QuoteReport This Post
lyman
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here you go


eBay item number:

282454300996


not my auction or endorsement, but an example of what is being discussed


https://chandlersfirearms.com/chesterfield-armament/
 
Posts: 10668 | Location: Beach VA,not VA Beach | Registered: July 17, 2007Reply With QuoteReport This Post
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