Item description The PR-4 Single Point Sling Mount installs on any M4 style carbine receiver extension. No weapon disassembly required. Great for Agency or Unit members that are prohibited from ‘permanent’ weapon modifications. Installs/removes in minutes. Smooth shape does not interfere with charging handle or weapon manipulation. The PR-4 offers easy ambidextrous sling use, and features a rear-facing attachment point as well. Perfect for in-vehicle use and fast strong/weak hand transitions. Comes complete with instructions, installation wrench and heavy-duty push button sling swivel. Sling not included.