NcStar Fixed Mil-Spec Stock Tube Features The NcStar Fixed Mil-Spec Stock Tube is designed as a simple bolt on adapter that lets AK platform owners run AR style Mil-Spec collapsible buttstocks instead of a fixed factory stock. It is built to mount onto AKM pattern stamped receivers that have the square cut flat rear receiver section making installation straightforward without permanent modification. The tube itself is hollow with a rubber end plug that keeps the interior protected while still allowing it to double as storage for small parts or a cleaning kit. This gives AK owners a practical way to add modern ergonomics to a traditional platform. Finished in black to match most AK builds the stock tube includes QD sling mounts on both sides giving shooters the option to set up a sling on either side of the rifle for their preferred carry style. Because the adapter is non-folding it provides a stable rattle free mounting point for the collapsible stock of your choice. The straightforward design keeps installation easy for home builders and armorers alike. This is a practical upgrade for anyone looking to modernize the stock options on their AK pattern rifle. NC Star Fixed Mil-Spec Stock Tube Specifications Manufacturer: NC Star Model: Fixed Mil-Spec Stock Tube Type: Buffer Tube Compatible Hosts: AK-Platform Color: Black Style: Mil-Spec Available At: GrabAGun