RTG 3 lug barrel

[zpyroro]

I have a RTG 3 lug SMG barrel. I need to have it machined to fit my mckay semi receiver. Who can I send this to? Any recommendations?

Thanks

 

[amphibian]

I'm sure Morgan at Class 3 machining could do that for you.
https://www.ar15.com/forums/equipment-exchange/Barrel-Threading-sale-50-PTR-91-Tavors-Augs-Scar-Sig-MPX-Beretta-21A-Threading-FAL-PAPM92/143-1029861/?