Overview Reviews Product Description Ruger Standard, Ring, 30mm Medium(4), Matte Stainless Finish, 4K30HM, Sold Individually 90318 Product Videos Full Manufacturer Name Full Manufacturer Name Ruger Product Reviews Write a Review Write a Review × RUGER 30MM MED(4) MST (4K30HM) INDV Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *