I finished an 80% lower, added the lower parts kit to finish it, and added a 9mm complete upper.
When it fires, it is pretty decent. But, ~ 4-8 rounds out of a 31 round magazine will fail to cycle properly. That is, a round will fire, but then it will fail to completely eject the spent cartridge, and I usually have to pry the spent, mangled cartridge out of the action before I can have a new round insert into the chamber.
It occurred to me that I didn't get a parts kit/stock meant for 9mm. It was probably meant for .223 or 5.56.
Is it possible that my cycling problems are due to a spring that is too strong in the stock?
When it fires, it is pretty decent. But, ~ 4-8 rounds out of a 31 round magazine will fail to cycle properly. That is, a round will fire, but then it will fail to completely eject the spent cartridge, and I usually have to pry the spent, mangled cartridge out of the action before I can have a new round insert into the chamber.
It occurred to me that I didn't get a parts kit/stock meant for 9mm. It was probably meant for .223 or 5.56.
Is it possible that my cycling problems are due to a spring that is too strong in the stock?