G&G GGG-1068 Remington 870X 40mm Mount Low profile design MIL-STD-1913 configuration Perfect for mounting a tactical scope to your Remington 870, 1100, & 1187 shotguns Easy installation to factory drilled and tapped receivers, or receivers drilled and tapped for 6-48 threads Attaches with four steel Torx head screws. Torx wrench is included