This is a GG&G, Inc. Sling Mount known as the Single Point, model GGG-1283.
When used as a Remington Single Point Looped Sling Attachment" it allows the operator to mount the weapon on either the primary or offside shoulder. As a result" during dynamic entries it becomes easier to "cut the pie" at doorways and move around corners" whether they are on the right side or left side" without telegraphing the operator's position. In addition" slings attached to a single point mount work especially well when operators are deployed wearing body armor or are involved in breaching operations.
Features:
Installs easily with common hand tools
Accommodates slings with MASH hooks and HK style snap hooks
Also fits the Remington 1100 and 1187