I read the specs on the 9mm AR rifles that were listed, how do they get the FPS down to subsonic range on 115gr ammo? I understand how it works with .22 and a barrel under 5 inches but how with 9mm?https://angstadtarms.com/product/udp9i-integrally-suppressed/
This is their design, don't know if it is available to for outside of Angstadt yet. I know that Dobbs has done 9mm integrals as I inquired earlier about one. Just don't know how busy Bryan is right now.