Hello, and happy new year!
I bought a blemished lower from DSA a few months ago, I finally got a parts kit to put in it and I ran into an issue. The magazine release button won't go in the machined hole. I tried a second button from a different parts kit and it didn't fit either. I have to think that the hole for the magazine release button is too tight. I sanded quite a bit off of the button to get it to fit in the hole and the funcionality is pretty bad. This is the fourth lower I have put together and never ran into this issue before. Do you have any advice for me?