I have been trouble shooting feed issues on my SBR over the past few weeks. I took my Noveske 10.5" CQB 5.56mm upper to the range inserted a 30 round magazine, released the bolt, pulled the trigger, BANG. The next round to feed got hung up on the feed ramps. I dropped the magazine and the round fed. But the cycle of every other round not feeding continued even when using half a dozen other magazines.
So this morning I grabbed an extra BCG and a magazine to see if I could duplicate/troubleshooet. As expected the second round would not feed, but I touched the magazine while trying to get a better look at the hang up and it moved enough to feed the round. Continuing on I had 4 out of 30 rounds hang, all were unhung by just jiggling the magazine.
This is frustrating me because I have had no issues with another uppers I have put on this lower.
So is it the BCG? The feed ramps? The magazines? The buffer spring? Any ideas would be greatly appreciated.
So this morning I grabbed an extra BCG and a magazine to see if I could duplicate/troubleshooet. As expected the second round would not feed, but I touched the magazine while trying to get a better look at the hang up and it moved enough to feed the round. Continuing on I had 4 out of 30 rounds hang, all were unhung by just jiggling the magazine.
This is frustrating me because I have had no issues with another uppers I have put on this lower.
So is it the BCG? The feed ramps? The magazines? The buffer spring? Any ideas would be greatly appreciated.