Third time's the charm: why a drill press changes everything, and why 3D printing is just better.
This is my third frame build (don't have pics of the first one though). That very first one was a total loss because hand-drilling the pin holes went crooked; if you don't have proper machinery like a bench drill press, you're bound to run into alignment problems. My second one—which was an FDE frame—kept having constant feeding issues.
Between purchasing multiple frames and dealing with a stolen package, I essentially spent what a 3D printer costs. Honestly, it makes much more sense to just get a printer, download the files, and print your own frames. Plus, you get access to a huge variety of other builds, like a G43.
On this grey frame, I got a bit rough with the Dremel around the front pin area as you can see in the photos, but switching to the WEN drill press fixed everything and it cycles with zero jams now.