Loaded with innovative features, the Tac-Hammer RM4 Takedown Rifle Stock adds portability and convenience. This lightweight, compact stock was developed to fit perfectly with the factory Ruger Takedown 10/22 rifle. Compatible with factory tapered barrels only. Patented Stowaway accessory rail is concealed in the forend. When reversed, the rail is available for flashlight, bi-pod or other accessories. Get custom length-of-pull for proper fit and improved performance with the adjustable M4 type butt-stock, equipped with ambidextrous storage compartments for two spare Ruger rotary magazines. (Magazines not included.)