*Norc CQA 5.56? or .223?*
- Thread starter sirburus
- Start date
223 will shoot fine in 5.56 chamberings.
5.56 is NOT compatible with 223 chamberings.
Has to do with working pressures, etc.
There is an entire thread on this....isn't is sticked somewhere?
Read more on the subject here:
http://www.canadiangunnutz.com/forum/showthread.php?t=418462
Last edited:
Ar180shooter
CGN Ultra frequent flyer
- Location
- Ottawa, ON
It has to do with differences in throat specifications, and in most cases there aren't interchangeability issues.
I honestly thought it was pressures....either way, I do remember reading (for general rule of thumb) 233 safe in 5.56, but 5.56 not in 223 chambering
Ar180shooter
CGN Ultra frequent flyer
- Location
- Ottawa, ON
The difference in chamber pressure have to do with the method both SAAMI and NATO use to measure it. Since they use slightly different methods, the readings differ. The CIP (Commission Internationale Permanente pour l'Epreuve des Armes à Feu Portatives) lists 5.56 and .223 as having the same maximum safe chamber pressure (both around 62,000 psi).
The main reason the Chinese make M4's is overseas military orders - places like Paraguay, Iran and Venezuela who want the M4 but either can't afford or can't get approved for US export sales. The fact that they skip a couple of machining steps on the lower, sub out a few parts and sell them to us civvies for an "exhorbitant" price is just gravy.
Blastattack
CGN Ultra frequent flyer
- Location
- Winnipeg MB
The fun switch and associated components.
Yeah, they skip the machining in the area occupied by the associated components on the lower(behind the trigger group), and supply a semi auto parts kit. The upper is good to go for a Paraguayan "Mil Spec" gun.
