AKA M870 Dedicated RMR Red Dot Sight Base

This model was designed and produced during the heyday of water bead blasters.

The design is simple and elegant, with a straightforward structure suitable for FDM and SLS printing.

For FDM printing, please use a 0.4 nozzle, 5 wall thicknesses, and 50% or higher infill (the model is small, 100% is also acceptable).

The mounting holes are 2.7mm in diameter, and can be directly secured using M3 screws, or by pre-threading with an M3 tap.

This mounting adapter plate is for the AKA M870 RMR red dot sight, and other red dots with the same mounting hole spacing, such as the SRO, can also be installed.

The STP file has been released, allowing for modifications based on your specific mounting dimensions.