+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

My mark IV 22lr model 40105 has two screw holes on top of the barrel. Would this be where I mount the rail? — 1 Answer

by chuck, from LA, United States Asked on July 31, 2022

Name Ruger Mark III, Mark IV & 22/45 Picatinny Mount, w/ Pre-Drilled Recievers (5)
$16.95 $16.89
View Product
Write a Review
Continue As a Guest
Saving...
Sign In or Create an Account (optional)
or Register
Why use an OpticsPlanet.com account for my questions and answers?

Having an account with OpticsPlanet.com makes writing questions and answers even better! We’ll save all of your questions and answers in your account, provide you easy access to them, so you can see how the community has responded.

If you’d like to add a question without creating an account, you can proceed with filling out the fields on this form.

Show
Sort by
Filter by
Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on August 11, 2022

The Ruger Mark IV model 40105 has a drilled and tapper receiver. The holes on the top are designed for a Picatinny or Weaver rail to be mounted on top. The Ruger Mark III, Mark IV & 22/45 Picatinny Mount, will work with that model Ruger Mark IV.

2 of 2 found the following answer helpful.
Was it helpful to you? Yes | No
Share
Last updated 2025-11-12 UTC.