IWC Quick Detach QD Rotation Limited Buttstock Sling Mount IWC's QD Rotation Limited MOUNT-N-SLOT for Buttstocks provides a simple, lightweight and cost-effective solution for stocks that do not have an integrated QD sling mount. MADE IN THE USA | BERRY COMPLIANT FEATURES: Directly attaches through the slot intended for webbing located in many Buttstocks Rotation is limited to allow proper positioning of the sling between the firing and carrying position, preventing sling wrap-up and twist Accepts any Heavy Duty or Standard push button Quick Detach Sling Swivel that connects to any sling and sling system  Ergonomic, DIRECT attach design eliminates all sharp edges which can ensnarl the operator’s gear Ultra-light MOUNT-N-SLOT™ design weighs only .490 ounces CNC Machined from BILLET 6061-T6 aluminum; Type III Anodized per MIL-A-8625F NO GUNSMITHING REQUIRED 100% LIFETIME WARRANTY. PERIOD IWC MOUNT-N-SLOT products are MADE BY AMERICANS IN USA