NCStar DLG-146 Fixed Mil-Spec Stock Tube Black For AK-Platform The Easy And Simple To Install Mil-Spec Stock Tube Mount, Is Non-Folding Adapter For AK variants. It Mounts Onto AKM Pattern Stamped receivers With Square Cut Flat Rear Receiver Section. The Tube Allows a Variety Of AR Style Mil-Spec Collapsible buttstocks To Be installed Onto An AK Variant. It features QD Sling Mounts On Both Sides Of The Stock Adapter. The Stock Tube Is Hollow With a Rubber End Plug And It Can Be Used To Store Parts And Cleaning tools. Type: Buffer Tube