The Tiger Rock Inc. ST003M-USA AR-15 Collapsible Standard Version Stock Body is engineered for durability and performance, ideal for the serious firearm enthusiast. Constructed from fiberglass-reinforced injection-molded nylon, this six-position MIL-SPEC M4 buttstock is designed for resilience under demanding conditions, featuring a sleek matte black finish. M4 MIL-SPEC 6 position buttstock Molded from reinforced plastic composite Fits standard MIL-SPEC 6-Position buffer tubes Metal sling loop/attachment installed Matte black finish MADE IN USA Upgrade your AR-15 platform with this high-quality, reliable stock.