Reptilia DOT 1.93-Inch Mount for Holosun 509T

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Reptilia · DOT Mount
Reptilia DOT 1.93″ for Holosun 509T – direct 509T mount on M1913 Picatinny This mount is a clearly defined combination of a Holosun 509T footprint, an M1913 Picatinny base, and an optic height of 1.93 inches/49 mm. It’s not a universal adapter: the footprint, base, and desired height all need to match.

Our honest buying advice


A good fit If your red dot sight uses the Holosun 509T footprint, your firearm or platform has an M1913 Picatinny mount, and you’re specifically looking for a 1.93″ sight height.


Probably not a fit If your red dot uses a different footprint, the existing base isn’t Picatinny, or you need a lower mounting height. The brand name alone isn’t enough to determine compatibility.


What the features mean in practice


Holosun 509T footprint The optic mount is designed specifically for this footprint. Aimpoint Micro, ACRO/MPS, MRO, and other interfaces are not automatically mechanically compatible.


1.93″ / 49 mm The high configuration changes your head position compared with low or lower-third mounts. If you want to match an existing sight line, compare the actual height of the complete setup.


M1913 Picatinny The underside is designed for M1913 Picatinny. Check the slot dimensions and existing base before ordering rather than relying on the rail’s appearance alone.


7075-T6 aluminum The available product data lists 707
5-T6 aluminum and Type III hard anodizing. The two variants do not differ functionally, only in black or Flat Dark Earth Anodized.

Limits, drawbacks & avoiding the wrong purchase

No universal footprint: The mount is designed for the Holosun 509T. An adapter plate can change the interface and overall height and is not included with this item.
Choose the height deliberately: 1.93″ is a specific ergonomic choice. If you need a lower sight line, co-witness with a particular iron sight, or a different optic height, check the complete setup separately.
Don’t improvise with screws: Use only fasteners approved for the optic and mount, and follow the manufacturer’s torque specifications. Screws that are too long or too short can result in insufficient clamping or damage.

Technical specifications in practice

Feature
Specification
In practice

Optic footprint
Holosun 509T
Direct mechanical fit; not compatible with other footprints.

Mounting base
M1913 Picatinny
The existing rail must match.

Optic height
1.93″ / 49 mm
High sight line; make sure it suits your preferred head position.

Material
7075-T6 aluminum
Lightweight, durable mount construction.

Finish
Type III hard anodized
Black or FDE Anodized, depending on the variant.

Variants
RC-100-167 Black / RC-100-168 FDE
Color choice without changing the mechanical interfaces.

Included
The Reptilia DOT 1.93″ mount for Holosun 509T is supplied in the selected color. The red dot sight, firearm, rail, and any additional adapter plates required are not included with this item.

Safe use
Only perform installation work on a firearm that is completely unloaded. Before tightening, check that the mount and optic sit flush, that the specified fasteners are used, and that no screw bottoms out. Follow the applicable manufacturer torque specifications; after changing the setup, check function and point of impact at a suitable shooting range.

FAQ
Does the mount fit every Holosun sight? No. It is specifically designed for the Holosun 509T footprint, not just the Holosun brand.
Does it fit Weaver? The available product information lists M1913 Picatinny as the mounting base. So don’t assume automatic compatibility with Weaver.
What does 1.93 inches mean? It is the specified optic height for this mount. The ergonomic effect depends on the complete setup, including the base, mount, and optic.
Are the black and FDE versions technically different? The Shopify variants differ in color. The footprint, base, and height are the same.
Is an adapter plate included? No. The product page describes the direct 509T version; additional adapters are not included.

Black-Raptor verdict: This Reptilia DOT is a clear choice when three things are settled: Holosun 509T, M1913 Picatinny, and 1.93″ height. If you’re unsure about any of these, first check the interface on your setup before buying.