Posted By: Creedmoor
300BLK Magazines - 10/24/16 01:27 PM
I'm in the process of building a 300BLK and was wondering about the magazines and any problems I may encounter. I have a good supply of MagPul PMAGs on hand (the polymer ones). From what I can gather these will be fine.
Anyone have any insight or suggestions?
Anyone have any insight or suggestions?