The GL-Core S was specifically designed for one of the best Israeli Counter-Terrorism units to be used as a primary buttstock. - The design process started with the GL-Core buttstock and implemented all the design changes that were requested to create a buttstock that will be short and compact for CQB scenarios but will still provide strength and stability for mid-range engagements. - Advantages: - Small and compact allowing for easy maneuverability during CQB - Flat faced rubberized butt-pad designed for use with and without tactical body armor - Interchangeable buffer tube adapters for a tight fit on Mil-Spec and Commercial buffer tubes - Integrated cheek weld optimized for the M4/AR15 platforms - No protruding parts will not get caught on gear or webbing - Inversed positioning lever will not open accidently - Two integrated quick detach rear sling swivel connectors - Made of durable and light-weight fiberglass reinforced polymer composite