Rival Arms R-22 Precision Chassis System Satin Gray Aluminum Ruger 10/22 The Rival Arms R-22 Precision Chassis System Takes Your Standard Ruger 10/22 Style Rimfire Rifle And turns It Into a Serious Precision Plinking Machine. CNC-machined From Billet Aluminum Designed To Accept Most Ruger 10/22 receivers Without Any Modification For a True Drop-In Fit. Standard AR-15 Stock And Pistol Grip Compatibility Allows The User To Customize The Fit And Feel Of Their Rifle. It Also Is Compatible With 1-3/16"-16 Mil-Spec Buffer Tubes. The Integration Of The M-LOK Accessory Mounting System brings Versatility To The System That Will Take Your Favorite Rimfire Rifle To The Next Level. Firearm Model: Ruger 10/22 Tube Included: No