About This Stoeger M3000/M3500 ModMount
This mount includes the receiver-specific base and optic-side mount needed to connect your optic to a tapped Stoeger M3000 or M3500 receiver.
How the Two-Part System Works
The base fits the firearm receiver and provides the recessed oval ModMount interface. The optic-side mount carries the optic footprint and has a matching oval stud. Two flat-head M4 screws secure the two parts together.
Every ModMount optic-side mount works with every ModMount base. This makes it possible to move an optic-side mount between compatible firearm or rail bases. Learn more in the ModMount system guide.
Optional vertical and 45-degree offset spacers install between the base and optic-side mount to raise or reposition the optic. Spacers are sold separately unless otherwise stated.
Compatibility
This receiver base fits Stoeger M3000 and M3500 shotguns with tapped receivers.
Choose the Correct Receiver Screws
Use the shotgun's serial number to identify the receiver thread. Models before serial number 1368845 use two #6-48 x 1/8 flat-head screws. Serial number 1368845 and later use two #8-40 x 3/16 flat-head screws.
Complete ModMount bundles include both receiver-screw sets. Use only the set that matches your receiver.
Installation Notes
Unload the firearm completely. Remove the magazine, clear the chamber, and remove any factory rail or other mount. Secure the receiver base with the receiver screws that match the shotgun's serial-number range. Seat the optic-side mount, or an optional spacer and optic-side mount, fully in the oval interface and secure the assembly with two flat-head M4 screws.
Attach the optic and dry-fit the assembly before final installation. Confirm that no optic screw protrudes through the optic-side mount far enough to contact or scratch the receiver.
Tighten #6-48 receiver screws to 10 in-lb when installed dry. Tighten #8-40 receiver screws to 15 in-lb when installed dry. Liquid thread locker is optional; if used, reduce torque to 7.5 in-lb for #6-48 screws or 11.25 in-lb for #8-40 screws.
Follow the installation instructions for the complete optic-screw check, torque values, and optional thread locker guidance.
Designed and Manufactured in the USA
Armadyne ModMount bases, optic-side mounts, and spacers are designed and manufactured in the USA. Each component is CNC machined from 6061-T6 aluminum in our Lincoln, Nebraska shop, then sandblasted and finished with H-Series Cerakote for wear and corrosion resistance.
Warranty and Returns
Armadyne stands behind the mounts and components we manufacture. Review our warranty and returns information for support, exchanges, and discretionary return terms.
