This is a Magpul Industries Stock known as the X-22 Backpacker, model MAG808-ODG.
The Magpul X-22 Backpacker stock takes the function of our full-size Hunter X-22 Takedown" and pares it down for ease of storage and transportation. Made for the Ruger 10/22 Takedown rifle" the X-22 Backpacker offers a minimalist solution for the hunter or outdoorsman who wants to transport their rifle in an efficient" convenient package without compromising shooting performance. Constructed of a durable advanced polymer" the X-22 Backpacker features an ergonomic hand guard" optional QD sling mounting capability" integrated storage compartment in the grip" a hinged storage compartment in the stock capable of storing up to 3 spare 10rd magazines" a MOE SL non-slip rubber butt pad" and a unique locking interface to attach the barrel assembly to the receiver when being transported. Fits all Ruger 10/22 Takedown rifles as well as the Tactical Solutions SBX barrel. Made in U.S.A.
Features:
Drop-in design compatible with all factory Ruger 10/22 Takedown
Integrated storage compartment in the grip
Hinged storage compartment in the stock