PTR Industries
Model:

Vent 1
PTR Industries Vent 1, Suppressor, 8.74", 308 Winchester/7.62 NATO, PVD Finish, Black, Direct Thread 5/8x24, Titanium Construction V1-3080101
UPC: 897903003593
PTR Industries
Model:

Vent 3
PTR Industries Vent 3, Suppressor, 7.75", 223 Remington/5.56 NATO, PVD Finish, Black, Direct Thread 1/2x28, Titanium Construction V3-5560101
UPC: 897903003609