Volquartsen Assembled Lower Frame for Ruger Mark II, Mark III, 22/45 1911 Style

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MSRP: $552.50
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Volquartsen Assembled Lower Frame for Ruger Mark II, Mark III, 22/45
A Completely Assembled Lower Frame Replacement... Includes Volquartsen Accuracy System Internal Parts

Our Volquartsen Custom 1911 Style Frame is CNC machined from aluminum alloy. Weighing only 7.1 oz, it is a complete frame with all internal parts including the Volquartsen Accuracy Kit: Extended Bolt Release, CNC machined Target Trigger, wire EDM cut Target Hammer and Target Sear, Titanium Disconnector, Built-in Spring Loaded Magazine Ejector and Extended Safety.

Each Volquartsen Frame is shipped with a clean, crisp 2.25 lb trigger pull. And by popular request, the Mk III magazine disconnect has been eliminated.
Fits 1911 Style Grips and 22/45® Compatible Magazines - This is a complete frame. All you add to complete a gun is your Ruger Mk II, Mk III, or 22/45* upper (barrel, bolt, and mainspring housing), 1911 style grips, and 22/45 compatible magazine. *In order to use this frame on a Mk II/III upper, a new 22/45 mainspring housing, grips and magazine is required. Please note that this frame has the grip frame angle similar to the 22/45® factory frame. Main Spring Housing Sold Separately if needed (Or, use your 22/45 mainspring Housing).

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Additional Information

Ruger Mark Pistols
Item Type:
Ruger Mark II
Fully Assembled
Ruger Mark II 22/45
Ruger Mark III
Ruger Mark III 22/45
Item Type:
Ships Internationally!
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9 Reviews

  • 4
    Volquartsen 22/45 lower

    Posted by Mike on Apr 5th 2023

    Totally changed the way pistol feels in the hand, very nice trigger reset and pull weight. I like that it eliminated the need for magazine to be in gun to fire. Is requiring a lot of fitting to get main spring housing to insert and remove easily. Barrel lock lug not allowing barrel to go towards rear enough for that function.

  • 5
    22/45 upgrade

    Posted by JP on Apr 23rd 2022

    If you believe the trigger pull on your stock 22/45 is a bit to much or causes you to pull off target. Then this upgrade will definitely improve this. I have contemplated this upgrade for several years. I finally decided to make the upgrade. I am sorry that I had not done it sooner. The trigger pull is now so sweet. There is no more creep or or waiting for the hammer to drop. It is right there where you would hope the trigger release to be. I’m so glad I made this upgrade. So smooth now.

  • 5
    Volquartsen 22/45 Aluminum Frame

    Posted by NW Shooter on May 14th 2018

    So anyone with a 22/45 light knows all the things that don't work well with the pistol. The trigger pull, magazine release, releasing the slide, and just cheap feel of the factory frame. This frame takes care of it all. Works perfect and as expected. You wont regret it, but its not cheap either. You do get what you pay for.

  • 5
    A dude

    Posted by Mark K on Apr 8th 2018

    The Volquartsen 22/45 frame is of the highest quality. And the flat face trigger is amazing. Clean break, over-travel and reset adjustments are perfect. Expensive. And worth it.

  • 5
    22/45 Frame

    Posted by Vince on Mar 3rd 2018

    Product lived up to my expectations, fit and finish were perfect. Installation was simple and it literally saved me from having to buy a new pistol.

  • 5
    Old Shooter

    Posted by Ferrin Falslev on Mar 1st 2017

    Had the old style 22/45 without replaceable grips, should have upgraded years ago. The Volquartsen frame has all the good stuff and it works as advertised.

  • 5

    Posted by Gene on Oct 12th 2016

    Got my first Ruger pistol in 1954, don't remember specifics about the model, but it was not a lot of difference in appearance from the Mark III 22/45 that I purchased early this year. It was accurate, reliable, and had a nice trigger pull that I did not have to even think about to shoot. The Mark III 22/45 is a nice idea and has decent sights, is very accurate, (sub 2 10 shot groups at 25 yards with it's favorite ammo) is reliable feels very similar to one of my 1911 variations, BUT has the worst trigger pull of any pistol, rifle, or shotgun that I have ever owned, and over the past 70 years I own, or have owned a BUNCH of firearms. My digital trigger pull gauge showed an average of 7 lbs. 14.2 oz. for 5 test. I removed the junk that would not let it fire unless the magazine was inserted and that reduced the pull to 5 lbs. and 4 oz. Had a shingle hanging gunsmith work on the trigger specifying that I wanted it to be 3 lbs. or less. Got it back after paying him $35.00, trigger still the same. I bit the bullet and purchased the Volquartsen 22/45 frame. Installation was simple. Everything fit as it should. Trigger pull average for 5 test was 2 lbs. 12.4 oz. and never varied as much as 1 oz. This made My Ruger Mark III 22/45 into the gun it should have been in the first place. So, it turned a $ 400.00 dollar pistol into an $ 800.00 pistol, and it's worth every penny. Would I recommend the Ruger 22/45 to a prospective buyer? Yes, but only if you are willing to purchase the Volquartsen 22/45 frame, otherwise, don' t waste your money. Would I purchase the Volquartsen 22/45 frame again? Yes, and I plan on doing so to set up a gun with red dot sights for steel challenge rim fire pistol shooting.

  • 5
    Hello eabco

    Posted by Paul on Jan 5th 2016

    This item works great!

  • 5
    A 22/45 Upgrade

    Posted by Matt on Apr 29th 2015

    The Volquartsen 1911 style aluminum frame has taken the best part of my old Ruger 22/45 pistol - the top half that shoots small groups with cheap Blazer ammo - and upgraded its ergonomics with a full-sized grip and a match grade trigger. The new frame didn't fit the receiver at first but a little patience and the shims supplied by Volquarsen got the two pieces together smoothly without any help from a rubber mallet. Then I added a strip of grit tape to the frontstrap, some new grips (stocks), and the mainspring assembly from my old frame and I was ready to shoot.

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