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As mentioned I just finished my first AR 15 (.223) build and shot it for the first time today. I had an issue that I'm hoping the members here can help me with.
Here are the sequence of events:
Charge handle and BC pulled back to verify unloaded. I did not use the bolt catch to keep the bolt back.
Inserted 10-round mag, made sure it was seated and pulled charge handle/bolt assy back and released. Watched the round advance and noticed the bolt seated all the way forward.
Aimed down range, Squeezed trigger once and rifle fired successfully. Brass ejected successfully.
Before a second pull I noticed that the bolt did not seat fully forward. It looked to be back by 1/4 inch.
Using the forward advance knob it would not move forward. I dropped the magazine and noticed a round was not picked up by the bolt...empty chamber.
I tried two different mags...same result.
This happened 8-10 times. Mag inserted, fires once and no round picked up. I took down the rifle and didn't notice any issues. Reassembled and tried again. Same result.
It appears that the bolt is advancing back far enough to eject the brass, but not far enough to pick up a second round out of the mag.
Complete upper: CBC 20" .223/5.56 1:9 straight flute
Bolt Carrier Assemble Complete: Black Rifle Works, 5.56mm/.223 (BNC)
Ammo: varied 5.56/.223 head stamps. I accidently grabbed the wrong bag of ammo before I headed out, leaving the V-max .223 Rem at home.
Any assistance would be helpful...thanks.
Here are the sequence of events:
Charge handle and BC pulled back to verify unloaded. I did not use the bolt catch to keep the bolt back.
Inserted 10-round mag, made sure it was seated and pulled charge handle/bolt assy back and released. Watched the round advance and noticed the bolt seated all the way forward.
Aimed down range, Squeezed trigger once and rifle fired successfully. Brass ejected successfully.
Before a second pull I noticed that the bolt did not seat fully forward. It looked to be back by 1/4 inch.
Using the forward advance knob it would not move forward. I dropped the magazine and noticed a round was not picked up by the bolt...empty chamber.
I tried two different mags...same result.
This happened 8-10 times. Mag inserted, fires once and no round picked up. I took down the rifle and didn't notice any issues. Reassembled and tried again. Same result.
It appears that the bolt is advancing back far enough to eject the brass, but not far enough to pick up a second round out of the mag.
Complete upper: CBC 20" .223/5.56 1:9 straight flute
Bolt Carrier Assemble Complete: Black Rifle Works, 5.56mm/.223 (BNC)
Ammo: varied 5.56/.223 head stamps. I accidently grabbed the wrong bag of ammo before I headed out, leaving the V-max .223 Rem at home.
Any assistance would be helpful...thanks.
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