Even though most ammunition will operate Using the BullPup9, Bond Arms acknowledges that uncrimped ammo, like rounds made by Blazer, threat becoming pulled aside inside the magazine, given that the pull pressure during the chambering system can yank the casing and bullet apart, spilling gun powder in to the magazine https://redgearguru.com/clip-vs-magazine-whats-the-difference-to-shooters/gun-articles-gear-ammo-accessories/