BLACKHAWK!'s new LOK-DOWN sling swivels are precision machined and assembled to exacting tolerances for maximum performance and quiet carry.  Made entirely in the USA from premium steel, LOK-DOWN swivels utilize a positive locking mechanism designed to keep the swivel attached to your gun until you remove it. The threaded lock-down plunger with knurled, all-steel plunger knob allows quick attachment to BlackHawk and other standard swivel studs.