Just built a 300 blk with PSA upper, PSA lower build kit, CBC, Ind. CH and BCG, and Anderson stripped lower. It fires after manual charging but I have to manual charge it again to fire again. It is cambering the cartridge and ejecting it with no problem.

I have done a slow manual charge  to see about hammer follow and if disconnector is catching the hammer, it is. I have a friend who mentioned that he had the same problem, which was caused by the charging handle and it stopped after it was broke in. I did notice wear on the charging handle.

Any other suggestions.

Thanks,

I would try another CH first but to me it sounds like your gas block is out of alignment

OP
You got two threads

Check springs

I was going to go with springs, sounds like something is installed backwards.

Trigger spring or disconnector spring on upside down.

Topic Moved

Broke down the lower and re-install the fire control group and safety. I think I might have had the hammer spring installed wrong (feeling stupid). Not sure if that would be the problem. Everything still functioned as before, except hammer is stronger. I do have a slight problem with the safety. It works properly, but if you can press to hard and it will go past fire (semi) to toward full. Thinking might just need a new spring for that...

Everything seems to function normally. Though it did before, have not done a live fire test...

Hammer spring on backwards usually results in the trigger pin walking.

Was able to check test the 300 blk, and everything seems to bee working. Not sure if it was the hammer spring or the extra lube I added to the BCG and Charging handle...