Home / AR's / SME – Low Profile Passive Muffs – NRR 23db Noise Reduction Rating – SME – Low Profile Passive Muffs – NRR 23db Noise Reduction Rating – Category: AR's Product ID: 12436 Description Description SME – Low Profile Passive Muffs – NRR 23db Noise Reduction Rating – Related products Blackhawk Knoxx AR Pistol Grip – FDE AR15/AR10 Brass Catcher Birchwood Casey Presto Mag – Liquid Gun Blue – 3 oz bottle Birchwood Casey Tru-oil Gun Stock Finish – 3 oz bottle