Sling Ring® Shotgun Sling Mount For Rem 870 (12-GA) Sling Ring® Shotgun Sling Mount For Rem 870 (12-GA) The Sling Ring shotgun sling mount installs between the stock and receiver of a tactical shotgun, offering a secure and sturdy loop for attachment. It is compatible with H&K-style hooks or... MSRP: Was: Now: $29.95 Choose Options