I purchased a complete 5.56 pistol upper to go on the lower I use for my 300 Blackout pistol. It is a Dirty Bird Midnight Edition upper. It's not the most expensive, but it had good reviews. I gave it a try and the bolt would not close without pushing the assist button. After pushing the assist button it appeared to be in full battery, but would not fire. I assume that it is still no going into full battery. I took the BCG out of my 300 Blackout upper, and put it in the 5.56 upper. When I tried this I had to push the assist button to make it go into full battery, but it fired fine. It also cycled multiple rounds with no problem.
What do y'all think the problem is with the BCG that came with the 5.56 upper?
Sent from my SM-G955U using Tapatalk
What do y'all think the problem is with the BCG that came with the 5.56 upper?
Sent from my SM-G955U using Tapatalk