AR-15 ejection problem

[nicholst55]

Hi,
Fellas,if it is an overgas problem (which I doubt) then the OP has a defective barrel and needs to replace it!!! The M-16/AR-15 has NEVER needed an adjustable gas block to run with 5.56/223 ammo AS DESIGNED by Eugene Stoner!

No mention has been made by the OP on who made his bolt and barrel? Most are made fairly well as you don't see alot of people with problems with these rifles even the ones made on a "budget" as the rifle runs and runs well! Even the Germans at Heckler and Kock, dropped the "roller bolt" system in their world famous rifles and switched to the M-16 type "rotary bolt" system for their new G-36 battle rifle!

My build used a Daniel Defense bolt and barrel and although they are known to know how to make very good parts, I still bought the guages to check headspace on the build. Many assume that is set at the factory and it is, but should always be checked! Has the headspace been checked? This could also be a reason for problems ejecting and worse!

I think seagiant nailed it. A quality barrel should have no issues with factory ammo, even straight out of the box. I'd be inclined to carefully inspect the barrel; gas port diameter, smoothness/cleanliness of the chamber, etc. It sounds like the bolt is doing its job; the chamber just isn't releasing the fired case.

For 5.56mm
Colt's gas port sizes are:
* 10.5" - .093
* 11.5" - .081
* 14.5" - .063
* 16" - .063

[grampa243]

Is it chambered for .223 Remington or 5.56?

they are different sizes

what does the brass look like after you get it out.. is there marking from the chamber?? some times new chambers need a little help.

[xacex]

Oh, I hope someones not firing 5.56 in a 223 chamber.

[Markbo]

So... any update?

[grampa243]

did it get fixed ?