The Magpul Ambidextrous Sling Attachment Point QD replaces the standard AR-15/M4 carbine stock receiver end plate with a receiver plate that provides an ambidextrous QD sling attachment point. This minimizes sling snagging and provides an easy transition to and from weapon and reaction side shoulders. The Ambidextrous Sling Attachment Point QD works with single point slings with push-button quick disconnect sling swivels such as the Magpul MS4 GEN 2. Made from precision cast steel with a black Melonite finish. Compatible with both Mil-Spec and Commercial carbine receiver extensions. Made in the USA.