Overview Reviews Product Description Ruger Ruger American Rifle 20 MOA Scope Base, Black 90678 Product Videos Full Manufacturer Name Full Manufacturer Name Ruger Product Reviews Write a Review Write a Review × RUGER AMERICAN RIFLE 20MOA SCP BASE Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *