I finished my 20' build and I am having some problems with ejection and feeding. I have fired a total of 12 shots through the rifle and it ejects each round, but fails to pickup the next, or it will not hold open the bolt after firing a single round loaded in a mag.
Here is what I have tried so far:
Cleaned bolt - gas rings are in proper position
Used a different bolt assembly - same problem
Removed the gas tube and reinstalled - same problem
Tried different kinds of ammo - same problem
When seated in the upper, the bolt assembly can be retracted with the charging handle past the bolt catch and will lock back if I apply the stop. The gas tube pin is in place.
Parts list:
DPMS Barrel and gas tube
Del-Ton Upper
Used Olympic Bolt
The barrel, gas tube and upper are brand new. Any help would be appreciated.