however, time consuming to have to change the barrel so most shooters simply buy a dedicated .300 Blackout upper. Then, to go from .223 to the .300, you simply have to swap uppers (takes only a minute or so to do).
and .300 Blackout. Uniquely, there are two material options available to suit your needs.You can choose a lightweight polymer loader or a billet aluminum machine if you’re a high-volume shooter.When working well, I found this to be a very fast mag loader, however, there does seem to ...