Scalarworks QD Low Drag Optic Mount For The Trijicon RMR - Lower Third Co Witness


Sold out. More coming soon.

QTY -- +

Item ID: LDM410

Scalarworks QD Low Drag Optic Mount For The Trijicon RMR - Lower Third Co Witness


Sold out. More coming soon.

The Scalarworks Low Drag Mount is the ultimate complement to the Trijicon RMR and provides an absolute co-witness (center of iron sights is lined up with the center of the optic) and is the lightest QD optic mount on the market without compromising any strength, weighing only 1.35 oz (38.4 grams) and sports a streamlined profile free of protruding levers or knobs. The LDM410 features a tool-less precision telescoping clamping system that firmly and securely mounts on to any 1913 rail (even those out of spec without additional adjustments) by rotating the locking thumbwheel.

The Low Drag Mount's precision guided telescoping clamp holds zero on every re-installation, and under the heaviest recoil. Guaranteed. The LDM's precision clamp features a pair of rounded shear lugs that provide a high level of lateral impact resistance between the clamp and base.

The LDM/RMR has an intuitive quick detach attachment system that enables you to take it off in less than 3 seconds. Unlike conventional thumbscrews that rely on friction, the Low Drag Mount's patent pending self-adjusting attachment mechanism has an internal ball detent that makes it completely recoil proof. Guaranteed.

Key features

  • Repeatable zero with each installation via precision telescoping clamp
  • Lightest quick-detach Trijicon RMR mount in existence
  • CNC machined from ultra high strength 7075-T6 aluminum
  • Proprietary recoil-proof thumbscrew with ball-detent attachment system
  • Adaptable to out of spec rails without additional adjustments
  • Streamlined profile free of protruding levers or knobs


  • Materials: 7075-T6 aluminum alloy / 4140H steel alloy
  • Finishes: Mil-A-8625 type III hard coat anodizing / black nitride
  • Weight: 37.4 g (1.32 oz) including the screws
  • Height over rail (optic center): 40mm (1.57 in)
  • Compatible optics: any Trijicon RMR model
  • Compatible firearms: AR15, AR10, SCAR, MCX, MPX, Tavor, and similar with MIL-STD-1913 picatinny rail. Note: the Tavor co-witnesses 3mm higher than standard AR15 rifles.

100% Satisfaction Money Back GuaranteeSatisfaction guaranteed
We are so confident that you will be 100% satisfied with this product that we have backed your purchase with our 30 day money back guarantee.

Made in USA Made in USA


Co-Witness Height
Lower Third
Optic Center Height
1.57" / 40mm Over Rail
1.35 oz / 38.4 grams
Mounting Platform
MIL-STD-1913 Picatinny Rail
Compatible Optics
Any Trijicon RMR Model