Ruger American Rifle Shims

TriggerShims Logo TriggerShims Logo

Rebellion Against Tyrants is Obedience to God
~ Benjamin Franklin ~

Manufacturer of
Trigger Shims Brand
American Made Gun Shims
- Home of -

Gun Shims
Gun Smith Supplies
Since 2008

We Manufacture the Widest Selection of Gun Shims to be Found Anywhere on the Planet

100% American Family Owned

Shively Sales - Manufacturer of
TriggerShims Brand
Gun Shims
Michigan Center, Michigan

"Better to be poor and honest than to be dishonest and rich." Proverbs 28:6

Contact Us

~ Send Lance an Email ~

Waving American Flag

God Bless the U.S.A.

American Made Ruger American Rifle Shims

Ruger American Rimfire Rifle

Bolt Action Rimfire Rifle Shims

Sporting the Latest Engineering Improvements from Ruger including a Cold Hammer Forged Barrel, One Piece Three Lug Bolt, Integral Bedding Block System to Free-Float the Barrel for Outstanding Accuracy, and a Marksman Adjustable Trigger, the Ruger American Rifle was a hit with working men from day one!

Ruger American® Rimfire Rifle Bolt Shims

~ Including ~

Ruger Precision® Rimfire Models

Ruger American® Rimfire Long-Range Models

RAR Bolt Shim

Fits all variations of the Ruger American and Precision Rimfire

NOTE: this shim has been tried in a limited number of RPR rifles
and is considered in testing phase - Satisfaction Guaranteed or your money back

How does a Rimfire Bolt Shim work? The actual head space is in the recessed face of the bolt. Shimming between the two bolt halves ensures the bolt is up snug against the breech. If the bolt has excessive clearance at the breech it tends to cause misfires and light strikes.
When the bolt action rifle’s bolt locking surfaces become worn increases in the headspace can cause light firing pin strikes, poor ignition (misfires), looseness of the bolt, and loss of accuracy.
Factory fitting of the barrel into the receiver can also leave excess clearance between the bolt and breech. Excessive headspace causes the bolt to feel loose.
Shims can also Used for Adjusting after Re-Barreling
If you are getting misfires and light strikes shimming the bolt may be a good way to solve it.

Click on Target Below for Installation Instructions ~ PDF Opens in New Tab

Ruger American Rifle Bolt Shim

TriggerShims Bolt Shims come in the following assortments, Buy Multiple Paks and Save $

NEW 5 Piece Kits ~ Include .0015" Shims for Finer Adjustment

  • 4 Pak Assortment - $11 includes 1 each .002", .003", .004" and .005"
  • 5 Pak Assortment - $14 includes 1 each .0015", .002", .003", .004" and .005"
  • Use Drop-Down V and Buy 2X Double or 3X Triple Pak and Save $
  • 2 Shim Pak - $7.50  *Specify your size in Box Below .0015" or .002" - .007"
  • Includes Free ~ First Class Mail Economy Shipping

Nominal O.D. of .500" X I.D. of .376"

Made from USA Full Temper 300 Series Stainless Steel

Price includes Free Economy Shipping U.S. and International

Ruger American Rimfire Bolt Shim Pak 376 X 500
Choose Assortment Shim Pak
Enter Your Special Notes Below

Customer IAN from New Zeland writes about his Ruger American® Rimfire Long-Range
Good Morning Lance and Tammy,
I have decided to write a small message to regarding my experiences with your shim kit. I had purchased a Ruger American .22 Long Range and to say the accuracy was poor was an understatement. Nothing I did helped much. I did the bedding, Action screw tension, the barrel crown, the trigger, one item at a time with extensive ammunition testing each time to find something it liked. My CZ’s even with ammunition they didn’t like still outshot it. Then I saw the Youtube video by Mr Revolver Guy from Day at the Range and thought ok, lets try the headspace and if that doesn’t work, I will sell it as it’s a dog. I followed the easy instructions and straight away the groups tightened and also it started accepting ammunition it had sprayed around the targets before, every group tightened. Like all 22LR it still has it’s preferences but all the groups are now touching at 50 yards. My thanks to you both, Regards Ian

Can you improve on this fine Rifle?
I think a set of TriggerShims Brand Shims can Certainly Help!!
But don't take my word for it, read this unsolicited Testimonial;

Yet again I am a very impressed customer.
I was given a Ruger American Rimfire by my sons and wife for Father's Day 2 years ago and I just couldn't get the trigger "just right". Now, I had to keep this rifle because it was given to me as a gift - so I worked and worked on the trigger, polishing until the trigger and sear were mirrors - but still it was gritty and inconsistent.
Then, I stumbled across your kit and video and $15 and about 30 minutes later - I had the trigger I always wanted and knew the Ruger had hiding in there somewhere.
My Ruger had .015 slop / play, so I had to use two shims to get .013 and I put it together per your video instructions - and put the bolt in and closed my eyes and ..... FANTASTIC!
Gone is the grit and creep and the trigger is now consistent and I can't be happier.
Thank you for making such a great product at a fantastic price point.
I remain a loyal customer -
R.M. in PA

Ruger American Rifle Trigger Shims

~ Including ~

Ruger Precision® Rimfire Models

Ruger American® Rimfire Long-Range Models

RAR Trigger Shims

Trigger Shims for Ruger American Rifle Bolt Action Rifle

Fits All American Bolt Rifles both Centerfire and Rimfire

  • TriggerShims Brand Trigger Shims fit Ruger American Rifle Triggers
    Remove side to side play in the Ruger Trigger Housing
  • Not a one-size-fits-all solution, but a Custom Fit Choice of Thicknesses ~ .002" to .009"
  • All TriggerShims Brand Shims are manufactured by me from USA 300 Series Hard Temper Stainless Steel
  • Designed by me specifically for each application, shims won't show after installation into stock
  • Ensures a Smooth & Wobble Free Trigger Pull ~ End Trigger to Frame Contact
  • My 100% Satisfaction Guarantee
  • Made in the USA by
  • We are the Original Manufacturer of this Ruger American Rifle Shim
  • For Installation Instructions - See my YouTube Videos below

Trigger Shims for Ruger American Rifles including Rimfire
8 Pak Kit Fits all Rifles

Fits All American Bolt Rifles both Centerfire and Rimfire

Standard Shim Kit includes 2 each of .002", .003", .004" and .005"
for a total of 8 Stainless Shim Washers
Includes a 1/8" Cheater Pin* (USA Only) to help installation

Kit Price Above Includes First Class Shipping w/ Tracking ~ USA ONLY
8 Pak Kit .........$16.00

*Cheater Pin included in KIT w/ Tracking ~ U.S. Orders Only

Ruger American Rifle Trigger Shim ONLY - NO Pin KIT.......$12.50 / Free Shipping Anywhere

Item # SS-RAR/T ~ .126" X .458"

Ruger American Rifle Trigger Shim Kit
Enter Special Notes Below

OR choose SHIMS ONLY below, economy mail shipping
NO cheater Pin Included

Choose your own mix of Ruger American Rifle Trigger Shims below
You Must Include Desired Thicknesses when ordering

Choose from .002" to .009" Thicknesses

Click Box to Choose Different Quantities

Ruger American Rifle Trigger Shim Kit
Shim Thickness Choice
Enter Choice / Request Below

I used your trigger and trigger safety shims in both my R.P.R. and American Rimfire and they worked flawlessly. I can’t even describe how much difference the shims made. The triggers feel like they are custom built aftermarket with no side to side play at all. Thank you, Dustin


Ruger American Rifle Safety Shims

~ Including ~

Ruger Precision® Rimfire Models

Ruger American® Rimfire Long-Range Models

Ruger American Rifle Saftey Shims

~ New for 2022 ~

Fits All American Bolt Rifles both Centerfire and Rimfire

Trigger Latch Safety Shims

Fit Guaranteed or Your Money Back! Stops Safety Rubbing the Trigger Frame

Upgrade your Ruger American Rifle with Quality Shims from TriggerShims

A 6 Pak Assortment should easily do any one rifle

RAR Safety Shim is - .126" X .221"

Free Economy Shipping - First Class Mail and International

RAR Safety / Colt Diamondback - D Frame HAMMER Shim - 126X221
Shim Thickness Choice:
Enter Choice / Request Below

Photo Courtesy of Alan in CA

Bolt Shim Instructions
Bolt Shim Instructions
TriggerShims Snek

Rimfire Bolt Shim Installation
~ A General Guide ~

Rimmed Cartridges use the thickness of the cartridge rim for head-spacing .22 Rimfires Headspace on the Case Rim, and the actual head space is in the recessed face of the bolt.
Shimming between the two bolt halves ensures the bolt is up gently tight against the breech.
You can use our color coded numbered shims like a gauge to find the when the bolt face touches the barrel breech face, and then calculate where you want to be with your bolt headspace depth and rim thickness measurements.
I cannot tell you which shim best works with your rifle, you decide that yourself by fitting and feel and by shooting.
Installing Bolt Shims requires fitting by hand, and checking with the Bolt installed in the Rifle, and Locked Down - you do not measure with the Bolt out of the Rifle.
To establish the Bolt/Breech fit, shims are installed and fitted on an empty chamber.
If possible it may give you a better feel if you leave the extractors off some rifles while fitting shims.
Start with a 4 or 5 Pak of shims, install the .0015" or .002" thinnest shim and see how your bolt closes, if it seems to close as normal, then continue to install each thicker shim until the bolt starts to close harder than normal. At the point where your bolt begins to close hard, that was the amount of slack that was in your bolt, measured by whatever shim or shims combined were needed to bring the bolt up tight to the breech. Now it is best to remove that shim, and step back one number, example would be if a .005" Red shim causes the bolt handle to close harder than normal, then take it out and install a .004" Purple.
If you have to force or put undue stress on your bolt to close it, you should reduce the number of shims. You will generally only use 1 of the 4 or 5 shims in the package, but you can stack shims together if needed. When you have the correct shim installed, your bolt should close normally or just (ever-so) slightly tighter than normal. Put a very small drop of oil on the shim. Now you can go to the range and with the barrel pointed in a safe direction, once again check fit with your favorite ammo.
Due to variations in rim thickness, you may have to reduce the thickness of shims, remember you have already removed all the excess headspace from the bolt/breech, so now the only thing to do is remove thickness (shims) if / as needed to get to your sweet spot or required headspace for the rim thickness of your favorite cartridge.
For Longest Shim Life use a drop of oil or a (very small amount of) grease on your shim.
If you have to force or put undue stress on your bolt to close it, you should reduce the number of shims. A minimum of clearance should be maintained, do not put undue stress on the bolt by shimming too tightly as it is unnecessary!
At no time do you want to force the bolt to close, did I explain that clearly?
Bolt Shims have in many instances cured light strikes. Will they help with Accuracy? Don't take my word for it, Read our the Customer Reviews or ask our Customers
Simply Chambering More Consistently Yields More Consistent Results.
Your Satisfaction is Guaranteed, if you feel you receive no benefit you may send your shims back for a Full Refund.

TriggerShims Bolt Shim Instructions Copyright June/2023

TriggerShims Snek

Rimfire Rifle Bolt Shim Index


Expanded Selection of Rimfire Rifle Bolt Shims for 2023

Links to Our Growing List of .22 Rifle Bolt Shims

  1. Anschutz 54 ~ Now In Stock!
  2. Australian Lithgow LA 101 / SA 2020 Rimfire
  3. Bergara B-14R Rimfire Bolt Shims
  4. CZ / BRNO Rimfire Bolt Shims
  5. CZ 457 Rimfire Bolt Shims
  6. Kimber 82G Target Rifle Bolt Shims
  7. Marlin 80 / 983 Rimfire Bolt Shims
  8. Mossberg 44 U.S. Bolt
  9. Mossberg 144 LSB Bolt
  10. Remington 40X Bolt Shims
  11. Remington 504T Bolt Shims
  12. Remington 513T / 521T Rimfire Rifle
  13. Remington 540X Bolt Shims
  14. Ruger American Rimfire Bolt Shims
  15. Ruger 77/17 77/22 Bolt Shims
  16. Savage BMag Bolt Shims - Coming May 2023
  17. Savage MKII Bolt Shims - Prototype
  18. Suhl 150 Rimfire Rifle
  19. Tikka T1x and Sako P72 / M78 Rimfire Rifle
  20. Walther KK500 Rimfire Bolt Shims
  21. Winchester 52 Bolt Shims
  22. Winchester 75S Bolt Shims
  23. New for 2023
    ~ Barrel Shims ~

  24. CZ 455/457 Barrel Shims
  25. 10/22 Barrel Shims
  26. 2500X and Trident Barrel Shims
  27. NOTE: email me to be put on a list to be notified when new Bolt Shims are ready ~ Send Lance an Email ~

RAR001 TECH TIP VIDEO: Ruger American Rimfire Rifle
Trigger Shims - Installation Instructions TriggerShims Logo


TECH TIP VIDEO: Ruger American Rifle Trigger Pull Check

TriggerShims Logo


TECH TIP VIDEO: Ruger American Rifle .450 Bushmaster
Trigger Shim Installation

TriggerShims Logo

“If ever a time should come, when vain and aspiring men shall possess the highest seats in Government, our country will stand in need of its experienced patriots to prevent its ruin.”
~ Samuel Adams



(Shims Only) Orders - Add USPS TRACKING $4 - USA ONLY

MOST Shim orders under $50 DO NOT include Tracking and are sent in a
White Business Mail Envelope - Orders OVER $50 Include Free Tracking
You can Upgrade to USPS Mail Tracking on your SHIM ORDER for $4.00
This Upgrade includes a 6X9 Bubble Pak Mailer and USPS Tracking
(increases have driven our cost for Shipping and Packaging to almost $5)

~Click the ADD TO CART button below to ADD USPS Tracking to your Shim Order

Enter Special Notes Below

~Click Here~ for PRIORITY Mail

We Cheerfully accept Cash, Money Order, and Credit Cards through our Secure PayPal Check-Out

All Website Orders are Shipped the Next Business Day

I will Ship Shims to USA, Canada and International

Gun Parts Shipped to USA Only

PayPal ChargeCard Picture.gif

"American Made Gun Shims" - -
TriggerShims is a Trademark
Shively Sales
Michigan Center, Michigan

Copyright 2008 ~ 2022

God Bless and Make America Great Again!


If you have any questions or safety concerns, see a qualified Gunsmith.

I manage this site myself, Please Report Any Website Problems to;
Lance at

“We can’t go home again because of the change in it and in ourselves, but it’s still home, still part of us....
And that’s a beautiful thought.”
~ Thomas Wolfe