Sling swivel connection Recknagel Side-by-Side screwed

This sling swivel connection has to be screwed onto the barrel connection of a Side-by-Side shotgun and has an opening of 6mm.

Slings & Swivels New England Custom Gun Service, Ltd. - Page 1

What happened to simple sling swivels?

Alan Rhone Store

m lok sling swivel stud

Alan Rhone Store

Slings & Swivels New England Custom Gun Service, Ltd. - Page 1

Alan Rhone Store

Sling swivels

Rapid Emergency Detachment Swivel (RED Swivel)

Quick Detach Side Sling Attachment For Dovetails, GG&G