Modular Red Dot Adapter – MRA for Ruger Mark I, II, III, IV, IV Lite, 22/45 Pistol



Red Dot Adapter Mount for Ruger Mark I, II, III, IV, IV Lite, 22/45 – Modular Red Dot Adapter – M.R.A.

OuterImpact is excited to introduce the Ruger Mark I, II, III, IV, IV Lite, 22/45 M.R.A (Modular Red Dot Adapter). This product will allow the shooter to utilize a variety of red dot sights on their Ruger Mark I, II, III, IV, IV Lite, 22/45 with one adapter. We at OuterImpact have gone to great lengths to assure that the fit and finish of this system are top notch.

Are you looking for a low profile adapter to mount a multitude of Red Dot sights on your Ruger Mark I, II, III, IV, IV Lite, 22/45? Look no further… The OuterImpact Red Dot Adapter/Mount answers the question! Not only will the OuterImpact mount allow for various Red Dot Sights, but it allows the shooter to maintain a low profile mount. Allowing the shooter to get their Red Dot much closer to the bore axis of the gun vs. utilizing a picatinny mount. The Ruger Mark series is fun to shoot with “irons” and a blast to shoot with a Red Dot.

Thank you for your interest in our products. Check out our FAQ for answers to common questions and feel free to contact us at


Compatible Ruger Pistols:

  • Mark Iconfirm it has drilled/tapped holes
  • Mark IIconfirm it has drilled/tapped holes
  • Mark II 22/45 – confirm it has drilled/tapped holes
  • Mark III Standard
  • Mark III Bull Barrel
  • Mark III Competition
  • Mark III Hunter
  • Mark III 22/45 Lite
  • Mark III 22/45 Target
  • Mark III 22/45 Threaded Barrel
  • Mark III 22/45 Bull Barrel
  • Mark III 22/45 Hunter
  • Mark IV Standard
  • Mark IV Target
  • Mark IV Hunter
  • Mark IV Competition
  • Mark IV Tactical
  • Mark IV Hunter
  • Mark IV 22/45 Lite
  • Mark IV 22/45 Tactical
  • Tactical Solutions Pac-Lite™ (requires a purchase of these screws)

Not Compatible With The Ruger Mark Lite IV Series That Comes With Factory Installed Riton Optic

Available Colors:

  • Black
  • Burnt Red
  • Pink
  • Blue
  • Cyan
  • Clear


Compatible Red Dot Sights (Mounting Screws INCLUDED):

Mounting Hardware:

  • (2) 6-48 Weaver T-10 Torx Head Screws
  • (2) Sight alignment pins
  • (2) M3 x 8mm Flat Head Screws
  • (2) M3 x 6mm Flat Head Screws
  • (2) M3 x 6mm Socket Head Cap Screws
  • (2) M4 X 10mm Rounded Head Screws


Required Installation Tools:

  • Torque Driver
  • Extended shank T-10 Bit

Please follow mounting instructions included with the optic.

Material: Billet 6061-T6 aluminum.
Finish: Black Anodize
Coating: Anodize
Dimensions: Length: 2.220″
Additional Tools: T-10 Torx driver (not included). Why is my tool NOT included? Click Here
Purchase Tool

US Patent: US D851,196S

Installation Instructions:

MRA Plate Install Video
Burris FastFire II/III Install Video
Trijicon RMR Install Video

Red Dot Sight Adapter Mounting Instructions: Part# OTL-RDM-RGR

How to Attach the Red Dot to the Adapter Plate

Additional information

Weight 2 oz
Dimensions 8 × 4 × 2 in


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