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failure to extract or eject

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Old 12-27-2012, 08:13 PM   #11
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Also you said the ammo is 223/5.56.. which is it.. they are almost interchangable but 223 offers less pressure than true 5.56 mm and will not fully cycle some tighter guns.

Especially those that have been "improved" with a full-auto BCG and "H" marked buffer.

From your descritpion it sounds like it might be similiar to a problem I had one a used gun.

It wouldnt cycle properly on 223 only on 5.56.

It had a full auto BCG (adds weight) , a H Buffer, and a rifle lenght spring(!) in it.

Putting in a carbine lenght spring and a lighter buffer may have fixed it ,but i have not shot 223 in it for a while


Primary Rifle:
BCM 16 inch, LW barrel w/ EOtech 512.


Last edited by bluez; 12-27-2012 at 10:08 PM.
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Old 12-27-2012, 08:28 PM   #12
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The rifle length spring was going pretty far!
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
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Old 12-27-2012, 09:45 PM   #13
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PWA (Pac West Arms) were mix and match rifles as I believe that they only made lowers.
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