When accuracy and a level playing field matter, Anarchy Outdoors has created the perfect scope base. Not only is this sleek design compatible with all scope rings, but we've also incorporated a removable bubble level into the rail to help improve accuracy.If you're looking for scope bases compatible with Short Action RPR, we've got you covered.Removable Bubble LevelAnarchy Outdoors strives to provide innovative, state-of-the-art products. Our scope bases have done just that by incorporating a removable bubble level. This means the bubble level colors are interchangeable, allowing for maximum customization. Every scope base comes with the standard green bubble level with additional colors available for purchase. Change out your bubble level for a pink or blue level with ease. Simply unscrew the level, take out the existing level, pop in another color, and tighten it down. Decide later down the road that you want to try yet another color? No problem, follow those same steps over again.