The Fab Defense GLR-16 Buttstock for your AR-15/M-16 provides you with enhanced versatility. The GLR-16 features a rubber butt pad for fast and stable shouldering, a patented "Anti-Rattle" mechanism and a water-resistant battery storage compartment. The GLR-16 maintains a traditional frame design for familiarity, but with all the upgrades and enhancements you could ask for. Features: Uniquely designed rubber butt pad for fast and stable shoulder positioning Unique patented "Anti-Rattle" mechanism, fits perfectly on MIL-SPEC and commercial after-market buffer tubes Three Integrated Slots for Sling Attachment, One in the Front and Two at the Rear Two Ambidextrous Metal Quick Release Rear Sling Mount Points Water-resistant anti-rattle storage compartment for two CR123 or AA batteries Maintains Contour & Size of Original Design Made from fiberglass-reinforced polymer composite Palmetto State Armory is your top choice for tactical accessories and gear from Fab Defense and other top manufacturers!