These are high quality magazines that feed very well. I bought these because they look like p-mags, and look super tactical. But buyer beware: if you have a nexus pro, they won't seat properly in the magazine well. Now, it's not as bad as the bump on Nerf 18-round stick mags, and it could probably be fixed with a dremel. Overall, they are high quality magazines, that are a great size. Although, I will say that I'm disappointed in Out Of Darts for not stating the incompatibility with the Nexus Pro, as it is a very popular spring blaster.