The 5.56 NATO MAX gauge (also know as a 5.56 NATO Field) is used to measure the maximum allowable 5.56 chamber headspace. If the bolt closes on the MAX Gauge it is considered unsafe headspace and should be taken out of service for repair. This is the 5.56 spec 1.4736" gauge, and not the SAAMI .223 Remington.
N**L
Five Stars
As described.
K**R
Does its job
It simply works as it is supposed to.
S**L
Great Product,Buy,Buy,Buy no problems here
Great Product,Buy,Buy,Buy no problems here
A**R
better safe than
a must have for building an AR. better safe than sorry
J**N
Five Stars
Works as intended.
C**.
Essential for any 5.56 build
This is what you need in a 5.56 AR build! Really fast shipping. For 5.56, only use a GO gauge and a FIELD gauge. A .223 NO GO gauge is too short for a 5.56 because of the slight differences in the neck of the cartridge.
E**C
Necessary for safety
very useful when I had to remove my barrel for repairs
R**Y
Great gauge, and a good price
Great gauge,and a good price.
Trustpilot
2 weeks ago
1 day ago
