The Trijicon RMR Type 2 with 1.0 MOA dot and adjustable LED - bundled with the RM33 Picatinny rail mount for shotgun and rifle use. The mount converts the pistol-RDS RMR into a rail-mounted optic suitable for shotguns (3-gun, defensive), AR pistols, and lever-action carbines. Specs: Reticle: 1.0 MOA red dot, adjustable LED Mount: RM33 Picatinny rail mount (low profile, T-15 Torx) Housing: 7075-T6 aluminum, hardcoat anodized black Battery: CR2032 Weight: 1.2 oz (RMR) + RM33 mount Waterproof: IPX7 Use case: If you want RMR durability and battery life on a Picatinny rail (instead of buying a separate red dot for a rifle/shotgun), this bundle delivers. The 1 MOA dot is right for shotgun slug accuracy and precision rifle work. The mount can be removed if you ever want to slide-mount the RMR later.