FAB Defense GLR-16 Buttstock is a matte black fiberglass reinforced polymer collapsible buttstock for AR-15/M16/M4 platforms. Features a fixed water-resistant anti-rattle storage compartment, a non-slip ribbed rubber buttpad, and integrated QD sling swivel sockets and sling slots. Optional upgrades include an adjustable Cheek Rest (CP) or Picatinny-integrated Cheek Rest (PCP), available in separate versions. OAL 7.08, height 5.11, width 1.88. Weighs 9.73 oz. Safety note Follow all manufacturer installation instructions. Verify proper function and secure mounting before use. Comply with local firearm laws and regulations.