This heavy duty push-button sling swivel from Blackhawk is a convenient way to adapt a firearm for sling carry. It is compatible with most push-button mounting points, including those found on the Weaver Tactical Rail Mount Sling Adapter and 2-piece Quad Rail Forends. The button allows rapid attachment and detachment, making it extremely easy to install on the firearm, but also fits tightly enough to make it highly secure even during rapid movement. It comes with a manganese phosphate coating, which greatly increases wear and corrosion resistance while also allowing the metal components to slide easily across each other.