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Questions & Answers
does it fit HS403A optic

Yes, this mount fits the HS403A optic along with any other dot that uses the RMR/407C/507C footprint.

by EGW, Verified Owner, December 11, 2025
Customer Reviews
Most Recent Reviews
EGR mount FOR RMR by Bobbers, Verified Owner, December 30, 2025
If you have a Henry Big Boy or Marlin 336 the EGR mount and picatinny rail is perfect for mounting either a Trijicon or Holosun red dot optic. The customer service at Optic Planet is second to none.
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Color:
Black
Red Dot Sights-Footprint:
RMR
Attachment Type:
Picatinny

Code: KK-RMT-EGW49600-49600

MPN: 49600

UPC: 841370119363

List: $69.99Save 10%
$62.99

Product Info for Evolution Gun Works Trijicon RMR/SRO, Holosun 407C/507C/508T, Swampfox Liberty/Kingslayer/Justice Picatinny Red Dot Sight Mount

This mount fits all of the Holosun 507c footprint red dots and is made in specialized factories by us! Our Holosun 407c / 507c / 508T picatinny rail mount allows you to easily and cleanly mount your Holosun with a Trijicon RMR footprint to a pictainny rail. This mount includes all of the necessary hardware to mount your red dot to a picatinny rail.image

This picatinny rail mount from EGW is precision CNC machined from aluminum and hardcoat anodized.

It is a picatinny mount that allows you to mount your red dots like Trijicon RMR, Trijicon SRO, Holosun 407c, Holosun 507c, Holosun 508t, and any other red dots with the same footprint to the a 1913 picatinny rail. It does not work with Weaver rails.

Specifications for Evolution Gun Works Trijicon RMR/SRO, Holosun 407C/507C/508T, Swampfox Liberty/Kingslayer/Justice Picatinny Red Dot Sight Mount:

Manufacturer: Evolution Gun Works
Color: Black
Finish: Anodized
Fabric/Material: 7075 Aluminum
Red Dot Sights-Footprint: RMR
Attachment Type: Picatinny

Package Contents:

  • Evolution Gun Works Holosun 407C / 507C / 508T Picatinny Scope Mount

Evolution Gun Works Trijicon RMR/SRO, Holosun 407C/507C/508T, Swampfox Liberty/Kingslayer/Justice Picatinny Red Dot Sight Mount Orderable Models

List of Orderable Models

  • Evolution Gun Works Trijicon RMR/Holosun 407/507C Picatinny Red Dot Sight Mount, Black, 49600 , MPN: 49600 , UPC: 841370119363 , Code: KK-RMT-EGW49600-49600
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Last updated 2026-08-05 UTC.