This VKARSTK Ncstar Blastar Mil-Spec AR-15 thumb hole fixed stock for sale has a internal storage compartment in the pistol grip and comes with rubber buttpad for comfort. This AR-15 fixed thumbhole stock fits MIL-SPEC AR15/M4 carbine buffer tube only. The fixed stock is constructed of heavy duty polymer and hard anodized aluminum. AR stock features multiple QD sling cup points to install a QD sling (cups not included) and sling slot. Comes with black Thumbhole fixed stock and mounting bolts and tool included. The stock has 9 inch length of pull.