Sig MPX is M13.5x1, got to be careful because the AUG is M13x1.I’m sorry
I need it threaded 13.1 LH to fit on the MPX and the other end threaded in 1/2x28 to accept a can
Kaw Valley Precision makes one. https://kawvalleyprecision.com/product/kvp-thread-adapter/I’m sorry
I need it threaded 13.1 LH to fit on the MPX and the other end threaded in 1/2x28 to accept a can