Ok for all intense purposes the gun is acting like it has a low gas pressure issue - But!
I have been down to the range twice now and have found the Mil Spec buffer tube assembly I installed is causing my issue.
It's a Mil Spec carbine length buffer tube but the spring was too long and stopped the bolt ( 18" barrel length rifle gas system w/ .750 low profile gas block ) from going back enough to chamber another round and lock on last round. ( I have tried 2 brands of ammo as well same outcome didn't change anything ).
I tried 2 other lowers I had with carbine buffers and they both did the same thing.
I decided to cut the spring a little thank goodness I had some cutters with me. I first took off 3 coils.
It was better but still failed to load another round or stay opens on last round.
I took another 2-3 coils off and the bolt started to cycle and load the next round and stay open on last round.
Ok so that fixed it for the time being so now to figure out how to fix it permanently,
It is an 18" Wylde barrel with a rifle length gas system with a .750 gas port, everything is lined up correctly. ( Nothing is loose or misaligned I took my time doing this )
I have to double check the gas key tonight to make sure it is tight, even though its new it could still be loose from what I have found online. ( It is staked ) I highly doubt it is bad though.
I would really like to keep the 6-position stock on it with the carbine buffer tube but its looking like it may need a rifle length buffer tube and stock. ( don't know for sure getting a $60 Rifle length buffer kit will fix it 100% if it is under gassed )
Or do I take it all apart and drill out the gas port on the barrel a little bit to try and bring up the gas pressure more and be able to carbine buffer with the correct length spring....
From all the reading I have done online a rifle length upper should work with a carbine buffer tube is there any reason why it wouldn't?
hmmmm I don't know
I know cutting the buffer spring isn't a fix but still looking for the cure and I know I will get it over time