Any CGN vendors carry the D fender oring upgrade?

[mg4201]

I am looking to upgrade the extractor in my shorty AR. Do any of CGNs vendors carry the D fender O ring?

 

[shawn]

I don't know if any on up here does but brownels does:

http://w ww.brownells.com/rifle-parts/bolt-parts/extractor-parts/extractor-hardware/ar-15-m16-d-fender-d-ring-prod9949.aspx

Shawn

 

[redddogg69]

Just go to princess auto and buy an oring kit, for the price of one at brownells you can get a 100+ kit and have lots of Orings.

 

[JR Hartman]

according to Patrick Sweeny(Gunsmithing the AR-15), regular O-rings are NOT the same as the D-fender.

 

[redddogg69]

according to Patrick Sweeny(Gunsmithing the AR-15), regular O-rings are NOT the same as the D-fender.

No, one is a circle the other is a D shape. Maybe the D shape chucks the brass a few inches further? I don't know. But for the cost of a regular oring I don't care either.

 

[Steiner]

Not sure if this link may help you out:
http://ctcsupplies.ca/products/buffer-technologies-extractor-upgrade-kit

 

[mebiuspower]

If you need to spend $12 on that D-ring I bet there's something else wrong with your extractor or your bolt. BCM spring kit has the crane o-ring, the spring and the black insert for $5 and I don't see why that won't fix the problem.

 

[JR Hartman]

apparently, its not the shape, as much as the composition of the ring itself, and the very harsh conditions it lives in. He went on to say that this is not intended to fix an existing problem, but to prevent one from happening. I read that part of that chapter last week, so I cannot remember exactly what was said, but I do remember him saying not to use hardware store O-rings.