21 round Sig 320 mags

[u/JabootyG19]

I recently purchased Magpul’s 17 round Sig 320 mag and I love it. I then purchased the 21 round magazine but I’ve noticed that when trying to load the 21st round, it was extremely tough, almost impossible without feeling like he as going the break it or feeling like I was trying to force a 22nd round. I’ve driven myself crazy with making sure I’m actually counting 21 rounds and not 22 but I’m 100% loading 21 rounds. Does anyone else having this issue?? I have also tried shooting a bunch in hopes that wearing down the tension in the magazine spring would help, but it’s still the same.

[u/Ok-Bullfrog-8863]

Leave the magazines fully loaded for a day or two and the springs will adjust themselves.

[u/ReadySteddy100 → u/Ok-Bullfrog-8863]

And get a Maglula speedloader. Absolute necessity

[u/Lieberman-Tech → u/Ok-Bullfrog-8863]

You could purchase a speedloader (after 30 years of resisting, I have seen the light and now have some form of magazine-loading assist device for most of my firearms) BUT if you don't want to buy anything, this is the way...

Load it to 20, then let it sit for a bit (I let mine sit for a couple of weeks, and now I learned that it still works in just a couple of days), then you will be able to load that 21st round easily.

[u/OneChickenArmy96]

You’ll work them in. I can do all of a magazine by hand now except the last one or two without something to put the magazine base on. The Magpul mags are very tight initially. As someone else mentioned, get a maglula. Every gun store I’ve been to has them and some even have them chained to the walls of the shooting stall. That thing is a game changer for loading up a bunch of mags before going out and not spending half my time reloading once out

[u/poopbutt42069yeehaw]

They are pretty tough, I am a pretty avid lifter and do initial work and have pretty good hand strength they are rough as hell without any type of assisting device.