Armadyne Manufacturing is excited to introduce a mounting solution for the Holosun 509T micro red dot sight specifically for Ruger Mark IV. This low profile and lightweight mounting plate allows you to attach the Holosun 509T micro red dot on your Ruger IV. Mounting hardware included.
Manufactured in the USA!
Mounting Hardware:
2X 6-48 x 3/16 (Using for securing the mount to the receiver) #6-48 Cap Head Screw
Compatible Optics
Designed and Manufactured in the USA
Our mounts are proudly designed, manufactured, and sold right here in the USA. Each mount begins as a billet of 6061-T6 aluminum and is CNC machined in our Lincoln, Nebraska shop to exacting standards. After machining, we sandblast and finish every mount with H-Series Cerakote—a two part, heat cured ceramic coating that delivers superior scratch resistance while preserving dimensional accuracy. We take pride in supporting American manufacturing and source our raw materials from companies that share the same commitment.
Ruger MK IV Compatibility:
The following models are NOT compatible with this line of mounts.
Ruger Mark IV Tactical Silencer Shop Exclusive: 40179, 40182, 40186, and 40181
Ruger Mark IV LITE Optics Ready: 43946, 43947, 43948, and 43949
Please see our Silencer Shop line and Optics Ready line for mounts compatible with the above models.














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