"Shadow" Picatinny Rail for Ruger® MK Series


$34.99 - $39.99
(176 reviews) Write a Review
0.30 LBS
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At a glance:

  • Picatinny rail allows for more precise and customized placement of optics
  • Relieved ejection port area minimizing failure to ejects
  • No unsightly overhang over the barrel like the Ruger® stock rail
  • Can be used with your iron sights in place

Customers demanded it and we listened! The TANDEMKROSS "Shadow" Picatinny Rail for Ruger® Mark Series is here and is a superior upgrade that both competition shooters and backyard plinkers can benefit from. Not only does the Mil-spec picatinny design allow for more precise and customized placement of optics, it is the perfect length and doesn’t have an unsightly overhang over the barrel. The underside of the rail has a relieved ejection port area to provide a sure ejection of spent brass. This rail can be used with both fixed and adjustable iron sights in place. This gives you the option of removing your scope or red dot and using the iron sights without removing the rail. It is available in two finishes to match or highlight your pistol and comes with installation screws. Dress up your Ruger® today and get the TANDEMKROSS Ruger® Rail! 

Precision CNC machined from aluminum and anodized black.

*Mount fits all factory drilled and tapped Ruger® MKII™, MKIII™, MKIV™, Government, Hunter, Competition, 22/45™, and LITE rimfire pistols.* 


Dimensions:  From End to End 3 3/8" From outside first rail to outside last rail: 2.9"

Don't forget, all TANDEMKROSS products are Made in the USA come with a LIFETIME guarantee!

Supported Firearms:

  • Ruger® MKII™
  • Ruger® MKII™ 22/45™
  • Ruger® MKIII™
  • Ruger® MKIII™ 22/45™
  • Ruger® MKIII™ 22/45™ LITE
  • Ruger® MKIV™
  • Ruger® MKIV™ Hunter
  • Ruger® MKIV™ Target
  • Ruger® MKIV™ Competition
  • Ruger® MKIV™ Tactical
  • Ruger® MKIV™ 22/45™
  • Ruger® MKIV™ 22/45™ Tactical
  • Ruger® MKIV™ 22/45™ LITE

Ruger® and its associated model names are registered trademarks of the Ruger® Corporation.


Don't forget! All TANDEMKROSS products come with a no-hassle lifetime guarantee!

WARNING: This product may expose you to chemicals including chromium, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

176 Reviews

  • 5

    Posted by John P on 7th Sep 2023

    Installed the Shadow Picatinny rail on my new Ruger Mark IV target pistol and was impressed with the fit. Also no need to run out and purchase loctite for the supplied screws because the screws already had the thread adhesive on them. Excellent product and shipping/delivery was great. Thanks for the positive experience.

  • 5

    Posted by Brad on 31st Aug 2023

    Got the grey one matched my Ruger MKIV in stainless steel exactly. Robust. Worked great.

  • 5
    Rail for ruger mark 3

    Posted by Rick sammons on 28th Aug 2023

    Works great mounted a micro red dot

  • 5
    Solid Red Pic Rail

    Posted by Christopher on 18th Aug 2023

    Fit perfectly on my Ruger Mark III Target and the red really adds a color of pop to the classic look with the Red Ruger logos in the handle. I have yet to mount an optic as I am currently deciding what to mount. I fit a TRS-25 and a cheap Chinese Eotech clone on it just to test the mount and they both mounted to the rail solidly with no wiggle. Can't wait to take it to the range and try it out once I decide which way to go.

  • 5
    Picatinny rail

    Posted by Michael on 17th Aug 2023

    I purchased this along with a front sight, installed easily and is well done. I can use the iron sights as the rail has a groove machined down the middle with permits seeing the front sight. I am still contemplating a red dot for the pistol, but am able to use the iron sights with the rail. Ruger would do well to issue the Mark series pistols with this rail as an option. Well done.

  • 3
    My 2 cents

    Posted by Craig on 15th Aug 2023

    I bought a Ruger MK IV 22/45 (Target) . I was mounting a picatinny rail and could not find a torque. I asked the company selling the picatinny (TandemKross) for torque data to mount the rail. TandemKross wrote back and said: "Thank you for reaching out. We do not provide a torque spec as Ruger does not provide a torque spec for the female threads on the receiver. " So I wrote to Ruger asking for torque and they said: "If you're looking for the torque spec for the rail, that would be 18-20 in/lbs. " I wrote TandemKross and said: "seems to me you should/could have this information. Will your screws handle 18-20 in/lbs???" Today TandemKross says: "If you have a bull barrel Target or Tactical upper, that sounds correcty (sic) and the max torque of a #6 screw is 20in*lbs. In our experience with the LITE uppers, the receiver holes will strip out before reaching that torque value. As the LITE uppers are more popular and this product will fit those models, we have elected not to provide torque values for target uppers and not LITE uppers as we do not have consistent data on proper torque for the LITE uppers and using the Target upper torque on a LITE upper will likely strip the receiver's threads." This answer came from the same individual (Product Manager/Lead Technical Support) that said TK did not provide torque specs.

  • 5
    Rail for Ruger Mk 4

    Posted by Robert H on 7th Aug 2023

    I used the Easy Export system for international sales. Everything went smoothly. Excellent product - received promptly - very well packaged. Good value. .

  • 5
    Better than OEM

    Posted by Douglas Aiken on 31st Jul 2023

    I misplaced my rail over the years and decided to mount a scope. Hated to pay for another one knowing it's around somewhere, but was happy to see it is an improvement over the OEM and would have bought it regardless.

  • 5

    Posted by James Faucett on 17th Jul 2023

    Perfect addition to my 10" MK IV Target