Marine tape is the rubberized version of the "sandpaper" type. Really feels like a grip, not a sanding block. Try a boat shop. That's where I got mine. Comes in two or more textures and thicknesses. I have it on my .380 Govt. model. Makes ALL the difference in the world. I just keep solvents away from it, and use RIG grease on a rag to wipe the gun down with instead of my remington spray oil.