My ETS 31 rounders run well in my M&P.
Magpul said to lube them up with CLP. Guess I'll give it a try
Always a good idea.
OTOH, my Magpul 17 round mags run like a trooper. Never an issue. I am going to try the CLP recommendation. Just for kicks. When the range opens back up... in 2025.....
I had similar issues when using steel cased ammo, and it would always happen when there are 5 round remaining. Seems like it has something to do with the coatings on the steel cases causing too much friction. If the first 5 rounds that I load into the mag are brass cased, the magazine would work fine.
having a glock puts you in an excellent situation where you can buy mags that are designed by the same company that makes the gun. this ensures performance. why not take the opportunity?
magpul AR mags have only become popular due to the general lack of a single stream procurement of mag and rifle.