***Due to receiver variations, you may need to modify the length of screws with a file or a grinder.
This precision-machined adapter plate allows for the mounting of the Trijicon RMR or, any variants otherwise with a Mossberg 500, 590 or Shockwave that has a drilled and tapped receiver. We take immense pride in the aesthetics and quality of the parts we produce. Every product is engineered, manufactured, finished, and shipped from our shop in Salt Lake City, Utah. Each part is inspected with calibrated precision measuring tools and checked against a model print to maintain the tightest tolerances.
Fits: Mossberg 500, 590 or Shockwave that has a drilled and tapped receiver. Trijicon RMR; Holosun 507 and Holosun 508; full-size models.
**May fit other models, listed is what we've tested.**
All mounting hardware needed comes with the order.
Specifications:
Material: Precision machined, heat-treated 4140 alloy steel.
Finish: Coated with a copper phosphate to aid in corrosion resistance.
Hardware: (included) 4-40 x 5/16 Screws, 8-40 x 0.440 Screws.
Install instructions for the Mossberg Shotgun adapter plate:
1- Make sure the surfaces and threads are clean and free from debris. Apply a light coat of oil or grease to the adapter plate to prevent rusting.
2- Loctite 222 (purple) is recommended. Absolutely under no circumstances should any red, green, or blue thread lockers be used.
3- Put a drop of 222 on the internal threads and on the thread's screws.
4- Use the supplied M4x.7 and 8-40 screws.
5- Very Important Note: Use a reliable torque driver set 10-13 IN. LBS
6- Allow to cure for 24 hours.
