Notable on some of the examples I have seen is that the bore is nowhere near centered on the stub barrel. It's almost like they cut the barrel, and chucked the receiver in a 4 jaw chuck and made the two levels of thread (smaller dia thread for the discharger cup, and larger diameter thread for the large retaining nut). Either that, or if they chucked the ross barrel, it was not straight in the chuck.
I had a machinist friend make up a bunch of the nuts for the dischargers. We found that there was actually variation in the larger diameter thread to the point we had to recall the first batch of nuts and have them re-worked. The threads on the barrel at that portion are actually a but tapered.
I still have nuts available to sell for those that need them, and still have the PDF that I can send out to those that want it.
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24-04-19, 20:13
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