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I've been working on printing up a Nylaug, but my KAK barrel doesnt fit through the front hole, measuring the step file, it's 22.86mm. Unfortunately I didn't catch the dimensions of my barrel because I didn't have my good caliper with me, but from the minimum specs image, the largest diameter on the barrel is 0.960 inches, or 24.38mm. Has anyone else who built a Nylaug had to open up the receiver channel more after printing? is my KAK barrel just out of spec?
I ran into the same thing on the mid section, not the front receiver section you have pictured. My barrel is also 0.960" diameter per spec. I modified the step file with a larger diameter for the mid section so that it tightly slid over my barrel (it was originally 0.954".)
The barrel slides in from the other side.
I had to open mine up a bit. But I used it to my advantage, I put a slight bevel on that hard lip on the gas block shelf. Then I filed the front receiver opening until the barrel just barely slips in a few mm. Then I press the barrel in the same time I pressed the gas tube sleeve in place. I assumed the tight fit would help with accuracy but I cant prove that. Do your threaded rods fit in without modification? It might be a flow calibration issue.
I haven't gotten any threaded rods yet since I'm gonna be getting the aluminum trunion from Riptide, and they for whatever reason, don't list what the machined threads are in the trunion. Thus, I'm waiting until it arrives.
However, today I was able to go back and work on the thing, the KAK barrel measured out to be 22.84mm at that one section and the physical print I measured around 22.6mm.
I shoved the barrel into the hole the wrong way and then hammered it through with a nylon mallet until it sheared off a thin layer of plastic, it fits fine now lmao, problem solved!
The threaded rods are standard M3x0.5 like the original build documentation states. I can also confirm as I recently upgraded my 300blk out build not long ago. They tried to make it as compatible with the original build as possible. An interference fit is a good fit lol