Designed in partnership with Unity Tactical(TM), the SB22 Fixed Kit is a lightweight, modular chassis for the RugerA(R) 22 Charger , Ruger 10/22A(R), and its clones. Able to accept M1913-compatible braces and stocks, the SB22 Fixed Kit is the key component to the perfect pack gun. Lightweight, polymer chassis with aluminum insert, Picatinny (M1913) rear, and integral, ambidextrous QD sling socket Accepts standard AR-15 pistol grips (ReptiliaA(R) CQG(TM) Grip included) Includes Picatinny (M1913) Bridge Mount and Flat Top Cover Proudly made in the USA Kit Includes Polymer Chassis ReptiliaA(R) CQG(TM) Grip Picatinny (M1913) Bridge Mount Flat Top Cover