irst, let’s talk about how you make your own ports in the first place and even how you can modify them on-the-fly during tuning. Back in RECOIL Issue 38, we threaded and vented an AK gas block using vented cup-point screws; this is a similar-but-easier process. As a bonus, the vented set screws we’ll be using are made from 18-8 stainless steel.
