Quoted: Richard, nitriding would probably be a better way to go. Matter of fact, IIRC, nitriding is a bath and does not require an electrode in/on the area to be plated- meaning you can dunk a gas port-drilled barrel, and have the port coated as well. No erosion or need for scraping, just shoot with brake cleaner... I believe it was H&M Metal Processing, maybe in Ohio, that I spoke with sometime ago. I can look up the contact info, if you want. |
The difficulty there is that not every AK variant has the gas port in the same location, not even with the same model.
The com bloc standards are pretty loose, gas port placement may vary by up to .250 even for consecutive number guns. That is just enough to block the gas port if you are not lucky!
This pretty well dictates drilling the gas port AFTER trial fitting all parts if you are building with a virgin barrel.
The same sort of issue comes up for head-space and the barrel retaining pin.
I know buyers want their build to be as easy as possible, but it's not really going to be possible to cut every notch and hole accurately in advance.
If they are pre-done, and then the pin holes for the gas block, front and rear sight bases, etc. do not line up perfectly the barrel maker will be blamed.
I have taken apart and reassembled about 1000 AK variants, the commies really bring new meaning to "hand fitted"!
For the best quality build the builder will need to fit-up their small components, it will be a PITA, but it's not that hard if you can use a drill press or mill.
The days of assembling an AK with just a hammer, vise, and press may be over, but with just a little more work we will still be able to assemble good quality AK's once kits become available again.
Those here who have assembled a "Krink" kit will already be familiar with these issues.