Benelli M4 Optic Mount – Trijicon® RMR
Rx Arms Solutions Benelli M4 Optic Mount for the Trijicon® RMR footprint. Made from 7075-T6 Aluminum and finished with Type III Hard Coat Annodize. This Benelli M4 optic mount gives users the ability to directly mount an RMR optic directly to the top of the Benelli M4 receiver. Providing lower 1/3 co witness with the OEM Benelli M4 sights. In addition, it provides compatibility with the Rx Arms Solutions Benelli M4 Handguard Compatible M-LOK® Heat Shield via the boss hole at the front of the optic mount. Made In Canada.
NOTE: the RMR screws that are provided with this optic mount are specifically for the Trijicon® RMR. Careful consideration should be taken when using other optics with the RMR footprint as the provided screws may be too long and could damage the Benelli M4 Receiver. Threads are the standard 6-32 RMR spec.
Co-Witness with Benelli M4 Sights
The Rx Arms Benelli M4 Optic Mount for the Trijicon® RMR is mounted at the ideal height to give co-witness ability using the factory OEM sights. Lower 1/3 co-witness is achieved when sighting in the shotgun for both close range, and longer distances. When paired up with Rx Arms Benelli M4 Half Moon Rear Sight the usability of the red dot improves even more, opening up the sight picture for quicker target acquisition while retaining the ability of backup sights if needed.
Benelli M4 Optic Mount – RMR Specs:
- Rx Arms Benelli M4 Optic Mount for the RMR is specifically designed and tested for compatibility with the Benelli M4 and M1014.
- Material: 7075-T6 Aluminum
- Type III Hard Coat Annodize Black.
- Weight: 25g
- Provides lower 1/3 Co-Witness with OEM Benelli M4 Sights.
- Compatibility with the Rx Arms Solutions Benelli M4 Handguard Compatible M-LOK® Heatshield.
- Includes: a set of optic mounting screws for the Trijicon® RMR with a T10 Torx head.
- Uses original Benelli M4 OEM receiver screws and washers for mounting to receiver, or upgrade to the Rx Arms Benelli M4 Mounting Rail Screws.
- Lifetime warranty against manufacturer defects, like all of our Benelli M4 accessories and parts.
- Made in Canada.
- Refund and Returns policy can be viewed here.
Installation Instructions:
- You must install the RMR unit before you mount the Rx Arms optic mount onto the receiver.
- Torque for the RMR screws should be no greater than 14inlb. Utilizing a T10 torx bit.
- After installing RMR onto the Rx Arms optic mount, verify that the screws underneath are not protruding, which would cause the screws to damage the receiver.
- Attach the Rx Arms optic mount to the receiver using the OEM screws and washers, snugging up the receiver screws in order from front to back.
- Do a final tightening to 15inlb dry, if using loctite, we suggest no more than 12-13inlb.
NOTE: many brand utilize the RMR footprint, it is important to be sure the screws you are using are not protruding out the bottom of our Optic Mount once your RMR footprint unit has been installed. This would result in damage to your receiver.
USA Residents Info:
We ship this domestically from our USA location, no duties, no tariffs.
Other International Shipments (IMPORTANT):
- Other International customers are responsible for any customs tax/duties. This is not legal advice, do your own research and due diligence.
- International customers are solely responsible to comply with all of their local laws and regulations. Rx Arms Solutions is not liable for any legal compliance issues that may arise from the purchase of my products.
- For Customs, this part will be labeled as “Sporting Shotgun Accessories”: HST Code: 9305.20.00
- International Shipping: Items will be shipped with tracking.
- Once shipped, this item is non refundable, if it gets lost in the mail, it is the customers responsibility and cost. Rx Arms Solutions is not liable for any lost shipments.
Backorder/Preorder Terms:
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- Backorders are payment in full. If, for whatever reason, you need to cancel the backorder before it ships, I will need to take 5% off the total backorder amount to refund the amount. This will cover charges my credit card processor charges me. For example, if the order was for $100, I will keep $5 and return $95 to you, to cover my back end costs.
- When ordering a backorder item with an item in stock, the shipment will be delayed until all items are in stock.
You may be interested in some of my other Benelli M4 and Tavor x95 / 7 Parts. Get more information on the Benelli M4. Benelli® is a registered trademark of Benelli Armi SpA. Rx Arms Solutions Ltd. is not affiliated with or endorsed by Benelli or its subsidiaries.












Nash R. (verified owner) –
Fit, finish and quality are top notch. Installs without a hitch. Just great. Fits Trijicon RMR HD, Holosun 407 and 507 without any issues.
David M. (verified owner) –
Great mounting system.
Wade V. (verified owner) –
Awesome mount and heat shield. Rock solid, absolute co-witness is perfect and of course it looks amazing.
Anonymous (verified owner) –
Coaligned sights are nice to have, Red dot matches with the benelli sights without issues.
Dave R. (verified owner) –
Great quality!
Brandon (verified owner) –
Easy to install and the Trijicon SRO fit perfectly. The mount was shipped out quickly. I highly recommend if you are looking to add a RDS to your M4
Blair W. (verified owner) –
Great fit
Jordan (verified owner) –
This is the fourth RX Arms product I’ve purchased and as usual it is fantastic. I looking for an RMR mount, and was very happy when this one was announced. It fits perfectly, and at a much better price point than competitors.
Joshua (verified owner) –
Daniel (verified owner) –
Fit and finish is amazing, easy to install, RMR fits nice and tight!
Anonymous (verified owner) –
Frederic D. (verified owner) –
Jose Velez (verified owner) –
Extremely please with delivery. Very easy to install, and aesthetically looks amazing