Reference Gauges - Page 11

Manufacturer: Precision Brand Brand: Precision Brand

Precision Brand Feeler Gage is used in manufacturing and maintenance operations wherever setting close spacing or checking extremely tight tolerances is required.

Manufacturer: AR Specialties LLC Brand: AR Specialties LLC

The 5.56 NATO MAX gage is used to measure the maximum allowable 5.56 chamber headspace. If the bolt closes on the MAX Gage it is considered unsafe headspace and should be taken out of service for repair. This is the 5.56 spec 1.4736" gage, and not the SAAMI .223 Remington.

Manufacturer: Forster Products Brand: Forster Products Model: BG3040F

The Field gauge is used to measure the absolute maximum allowable, safe chamber headspace. If the bolt closes on the Field Gauge it is considered unsafe and should be taken out of service for repair. This gauge ships only in the USA, No export or APO.

Manufacturer: AR Specialties LLC Brand: AR Specialties LLC

Forster marks this gauge as 308 since it is in the 308 family. But it is custom sized and only marked with the size. It is not marked GO since it is not SAAMI sized GO specs. No instructions, since this is custom sized for setting headspace during barrel installation with a pull thru reamer. Chamber should be reamed until the bolt just closes on this gauge and no farther. For use only on Semi autos that are safe to fire 7.62 NATO. This gauge is recommended for 7.62 match Chambers in which you need better accuracy than the too long 7.62 NATO GO spec, but not as tight as 308 SAAMI GO specs for increased reliability. This size is recommended for setting headspace on M1A match chambers, providing increased accuracy, with more safety in preventing slam fires which can happen with too tight headspace. Please consult a certified gunsmith if you are not sure if this is the correct gage for your application.

Manufacturer: AR Specialties LLC Brand: AR Specialties LLC

The GO gauge is used to measure the minimum allowable, safe chamber headspace. If the bolt does not close on a GO gauge, it is considered unsafe. Must have for rechamber jobs to set the new headspace or to verify the correct headspace of a new barrel and bolt combination. These days, I see a lot more new barrel and bolt combos fail the GO gauge than anything. Failing the GO gauge indicates the headspace is too tight, which increases chamber pressure and failure to go all the way in battery. This leads to pierced and popped primers that will damage the firing pin tip and cause slam fires. It also can cause hard extraction and damage to case heads. The GO gauge should be used to test any new barrel and bolt combination or when swapping in a new or used bolt. This gauge ships only in the USA, No export or APO/FPO.

Manufacturer: Forster Brand: Forster Products

The Go gauge is used to measure the minimum allowable, safe chamber headspace. If the bolt does not close on a Go gauge, it is considered unsafe. Must have for rechamber jobs to set the new headspace. This gauge ships only in the USA, No export or APO.

Manufacturer: Precision Brand Brand: Precision Brand

Precision Brand Feeler Gage is used in manufacturing and maintenance operations wherever setting close spacing or checking extremely tight tolerances is required.

Manufacturer: Precision Brand Brand: Precision Brand

Precision Brand Feeler Gage is used in manufacturing and maintenance operations wherever setting close spacing or checking extremely tight tolerances is required.

Manufacturer: Precision Brand Brand: Precision Brand

Precision Brand Feeler Gage is used in manufacturing and maintenance operations wherever setting close spacing or checking extremely tight tolerances is required.

Manufacturer: Precision Brand Brand: Precision Brand

Precision Brand Feeler Gage is used in manufacturing and maintenance operations wherever setting close spacing or checking extremely tight tolerances is required.