Outerimpact Savage AccuTrigger (Rounded Receiver) Short Action Picatinny Scope Base with 0 MOA Compatible Guns: Savage Accu-trigger (Round Receiver): 10, 11, 12, 14, 16 *Note: Does not fit 10 BA. If your gun does not have an Accu-Trigger, this will NOT work on your gun. There is a good chance you need a Picatinny Base that accommodates a "flat-back receiver" This is for SHORT action receivers. Please consult graphic with hole spacing measurements to determine if your receiver is a SHORT action. MOA: 0 Finish: Matte Black, Material: Billet 6061-T6 aluminum. Coating: Type III hard coat anodized 68 Rockwell. Mounting Hardware: Four (4) 6-48 Weaver T-10 Torx Head screws (included). PLEASE confirm that your receiver uses 6-48 screws. Additional Tools: T-10 Torx driver (not included).