A quick and easy way to check headspace on an AR-15 Website: kurtthegunsmith.com Affiliate Link: Save 10% on orders of $150 or more at Brownells.com using code KTG10
The Colt and military TDP go gauge is 1.4646 and not the 223 commercial go gauge that is 1.4636..During the Colt armorers class, the instructor Dean Caputo stated when the chamber heats up it will shrink length wise and can cause reliability, accuracy and pressure problems using a 223 minimum go gauge..Colt has always used the 1.4646 go gauge for their AR and M16 rifles..Most higher quality 5.56 barrel manufacturers are even longer..A set of incremental head space gauges are great for finding the true chamber size....I see many more short chambers than excessive head space problems with AR type rifles in 5.56 and should not be ignored..
@@kurtthegunsmith No problem, it's great when the gunsmithing community can help each other out to provide a better product..I give a lot of credit to people like you and Chad (from the School of the American Rifle) for sharing their knowledge..Take care..
I would check it with a field gauge as well. There shouldn't be anything dimensionally different between the standard .223 NoGo and a 5.56 NoGo unless it is stated by the factory. The only difference that those two cartridges have is in the throat area forward of where the headspace gauge actually measures the chamber.
I do check my AR'S for headspace but how many actually do ? I didn't before having a problem with BLOWN PRIMERS from a out of spec. chamber. It's an extra cost but well worth it IMHO for the peace of mind. I buy my headspace gauges before buying the actual different caliber upper or barrel.
I just purchased a psa upper with 1:7 mid length 16" barrel. Didn't come with bcg or charging handle. Bought a cryptic coatings mystic black bcg and radian raptor charging handle. It's all Mil-Spec but to be safe bought a set of quality gauges. It's a smart choice and checks issues before they begin. Sometimes I wonder when you see UA-camrs shooting poorly how the head spacing is.
This comment just made me realize something. I put a new bcm BCG in my bcm and had a blown primer when I used it for the first time. Only 1 blown primer out of 100 rounds but now I think I should check it. I didn’t know about headspace
Make sure you use the correct go gauge of 1.4646 in the 5.56 chamber and not the 223 go gauge of 1.4636..Many places sell the 223 go gauge labeled 5.56 when it is not..
The extractor is as easy as it gets. Grab your firing pin and push the pin out. The ejector, push the pin out with a punch and put your thumb over the ejector as you remove the punch so that it doesn't get lost. Reassemble the opposite way. Reassembly can be difficult without a specific ejector tool but can be done.
The Colt and military TDP go gauge is 1.4646 and not the 223 commercial go gauge that is 1.4636..During the Colt armorers class, the instructor Dean Caputo stated when the chamber heats up it will shrink length wise and can cause reliability, accuracy and pressure problems using a 223 minimum go gauge..Colt has always used the 1.4646 go gauge for their AR and M16 rifles..Most higher quality 5.56 barrel manufacturers are even longer..A set of incremental head space gauges are great for finding the true chamber size....I see many more short chambers than excessive head space problems with AR type rifles in 5.56 and should not be ignored..
Great info! Thanks for sharing!!
@@kurtthegunsmith No problem, it's great when the gunsmithing community can help each other out to provide a better product..I give a lot of credit to people like you and Chad (from the School of the American Rifle) for sharing their knowledge..Take care..
Great video!
Thank you!!
Excellent information thank you!
If your 5.56 chamber and bolt took a .223 NoGo guage, would you still fire .223 from that barrel with that bolt?
I would check it with a field gauge as well. There shouldn't be anything dimensionally different between the standard .223 NoGo and a 5.56 NoGo unless it is stated by the factory. The only difference that those two cartridges have is in the throat area forward of where the headspace gauge actually measures the chamber.
Thank you!🙂
Are you using the correct 5.56 go gauge of 1.4646?
Crickets..
I do check my AR'S for headspace but how many actually do ?
I didn't before having a problem with BLOWN PRIMERS from a out of spec. chamber.
It's an extra cost but well worth it IMHO for the peace of mind.
I buy my headspace gauges before buying the actual different caliber upper or barrel.
Completely agree, I wish more people would pay attention to this and check their headspace
I just purchased a psa upper with 1:7 mid length 16" barrel. Didn't come with bcg or charging handle. Bought a cryptic coatings mystic black bcg and radian raptor charging handle. It's all Mil-Spec but to be safe bought a set of quality gauges. It's a smart choice and checks issues before they begin. Sometimes I wonder when you see UA-camrs shooting poorly how the head spacing is.
This comment just made me realize something.
I put a new bcm BCG in my bcm and had a blown primer when I used it for the first time. Only 1 blown primer out of 100 rounds but now I think I should check it. I didn’t know about headspace
Make sure you use the correct go gauge of 1.4646 in the 5.56 chamber and not the 223 go gauge of 1.4636..Many places sell the 223 go gauge labeled 5.56 when it is not..
This video and others fail to show how to completely disassemble the BCG ejector and extractor.
The extractor is as easy as it gets. Grab your firing pin and push the pin out. The ejector, push the pin out with a punch and put your thumb over the ejector as you remove the punch so that it doesn't get lost. Reassemble the opposite way. Reassembly can be difficult without a specific ejector tool but can be done.
@@kurtthegunsmith thank you.
Utube has a millon videos how to do that.
@@righteousriverfishinginoregon7I don’t recall the video title being “how to disassemble your BCG”.