Charles the Receiver is Grooved For Scope Mounting.

Yes it is grooved for 3/8 dovetail rings. Good luck!

Yes, the Receiver is Grooved For Scope Mounting. (Features and Specifications): - Marlin Model 70PSS Rifle - Caliber: .22 Long Rifle - Capacity: 7-Round Magazine - Magazine Type: Nickel-Plated - Action: Semi-Auto - Barrel: 16.25", Stainless Steel - Rifling: 1:16" Twist, Micro-Grooved - Sights: Front Sight With High Visibility Orange Post Sight / Adjustable Open Rear Sight - Stock: Black Monte Carlo Fiberglass-Filled Synthetic Stock With Molded-In Checkering - Forend: Abbreviated - Receiver: Grooved For Scope Mount; Includes Side Ejection And Nickel-Plated Swivel Studs - Bolt: Automatic Last Round Bolt Hold-Open, Manual Bolt Hold-Open - Safety: Cross-Bolt - Overall Length: 35.25" - Weight: 3.25 lbs - Finish: Stainless (Steel) / Black (Synthetic).