TriggerShims.Com

God Bless America

TriggerShims.com

PAGE INDEX

CZ / Brno

Shims and Parts

BOX~CZ

CZ 452 ~ 453 ~ 455

CZ / Brno Head Space Bolt Shim Kit

Our Original TriggerShims Design
CZ / BRNO Rimfire Rifle Bolt Shims

CZ Models ~ 452 ~ 453 ~ 455

Brno 1 ~ 2 ~ 2E ~ 3 ~ 4 ~ 5

Also Fits:
Webley & Scott Xocet .22
Norinco JW25A and Variants
Diana R22 Classic or Carbon

New CZ / Brno Bolt Shims Now In Stock

My Bolt Shims for the CZ / Brno Rifles fit these Models;

• CZ 452 ~ 453 ~ 455
• Brno 1 ~ 2 ~ 2E ~ 3 ~ 4 ~ 5
• Also Fits ~ Webley & Scott Xocet Bolt Action Rimfire Rifle
• Norinco JW25A and Variants
• Not for CZ 457 ~ Click Here for CZ 457

These CZ Shims are .610" X .690" - Available in .002" to .007"

May Fit Other Models with a .604" to .609" X .705" Bolt

Known to fit Norinco CZ 452 Copies

CZ Bolt Shims sold in paks of 4 to check and adjust bolt to barrel fit

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 can to cause misfires and light strikes, or simply inconsistent accuracy. When a Production Rifle is assembled, a bit of extra room or excess tolerance can be left, and this slight variable can affect accuracy. 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.
Proper Adjustment of the Bolt / Breech with Our Shims may Increase Accuracy

Bolt Shims .610" X .690"

Item # SS-CZ/BS Bolt Shim Pak - CZ Models ~ 452 ~ 453 ~ 455

Click Boxs to Choose Different Quantities and Assortments

Includes Free U.S. Postage - International add Postage Below

CZ 452/453/455 and Brno Bolt Shim Pak

5 Pak Assortment $14.00 USD 4 Pak Assortment $11.00 USD 2X4 Pak Assortment $20.00 USD 2X5 Pak Assortment $25.00 USD 3X4 Pak Assortment $28.00 USD 3X5 Pak Assortment $35.00 USD 50 Pak Any Bolt Shim $110.00 USD 2 Pak Any Shim $7.50 USD

Choose Assortment Shim Pak

Our Standard Assortment Other - Your Choice

Enter Choice / Request Below

CHECK YOUR MODEL NUMBER - These are NOT for CZ457

👉Link To: ADD USPS TRACKING UPGRADE with SHIPPING PROTECTION

👉Link To: INTERNATIONAL TERMS / POSTAGE

Lance, I tried different shims and combinations of shims. I finally settled on .005". This gives me a slight open and close resistance. My group size shrunk to half the grouping I used to get. Not a benchrest grade group but a very respectable minute of squirrel.
Thanks for the CZ shims, Howard in the Great White North

BOX~CZ457

CZ 457 Bolt Shim Kit

CZ-457 Head Space Bolt Shim Kit

Our Original TriggerShims Design CZ457 Bolt Shims

My Custom Bolt Shims are made to adjust the Headspace on your CZ-457 Rifle.
All Production (not "Custom Made") Rifles leave the factory with a large tolerance of Headspace to accommodate varying Rim Thicknesses by ammunition manufactures.

Most Bench Rest Shooters have a favorite ammunition, and by using my shims you can adjust your bolt headspace closer to your chosen ammunition, reducing variations in accuracy. I have complete installation suggestions on our TriggerShims.com Bolt Shims Page.

We have reports from many shooters who have proven that consistent headspace with our shims yield Consistently Improved Accuracy.

I Recommend Trying Our Shims with Your Favorite Target Ammo, Top Shooters Use Our Shims and Your Satisfaction is Guaranteed!

~ Used by Shooters World Wide ~

Satisfaction Guaranteed or Your Money Back!

Item # SS-CZ457 ~ .376" X .565

Our New CZ 457 Bolt Shims ALWAYS In Stock
Designed and Made in Michigan Specifically By TriggerShims Brand for the CZ 457 Rimfire Rifle

All of the instruction on my CZ Page that applies to the .22 LR Rimfire also applies to the .22 WMR and .17 HMR

My Bolt Shims for the CZ Rifles fit these Models;

• CZ 457 in .22 and .17 Rimfire Cartridge Calibers

These CZ Shims are .376" X .565"

CZ Bolt Shims sold in paks of 4 or 5 to check and adjust bolt to barrel fit

These are Our Original TriggerShims Brand™ CZ 457 Rifle Bolt Shims Custom Made in Our Own Shop from American Made Stainless Steel - NOT Imported from Communist China

A 4 Pak or 5 Pak should do most any gun, Order multiple Paks for Multiple Guns and Save $$
Made from Tough, Long Lasting American 304 Stainless Steel

👉TECH TIP VIDEO: CZ457 Bolt Disassembly and Reassembly

Bolt Shims .376" X .565"

.22 LR ~ .22 WMR ~ .17 HMR

Item # SS-CZ457 Bolt Shim Pak

Click Boxs to Choose Different Quantities and Assortments

Includes Free U.S. Postage - International add Postage Below

CZ 457 Bolt Shim Pak

5 Pak Assortment $14.00 USD 4 Pak Assortment $11.00 USD 2X4 Pak Assortment $20.00 USD 2X5 Pak Assortment $25.00 USD 3X4 Pak Assortment $28.00 USD 3X5 Pak Assortment $35.00 USD 50 Pak Any Bolt Shim $110.00 USD 2 Pak Any Shim $7.50 USD

Choose Assortment Shim Pak

Our Standard Assortment Other - Your Choice

Enter Choice / Request Below

NOTE: These are CZ 457 BOLT SHIMS

👉Link To: ADD USPS TRACKING UPGRADE with SHIPPING PROTECTION

👉Link To: INTERNATIONAL TERMS / POSTAGE

BOX~CZBarrel 2023

CZ Standard Barrel Shims

Barrel Shims for CZ Rimfire Rifles

CZ Rimfire Rifle Barrel Shims - (NOT Bolt)

CZ Models ~ 455 / 457

Many Brno Models ~ ? Check Size

Fits Models with a .707" + or - Barrel Shank

Fits IBI Barrels with Straight .860" Diameter

CZ Barrel Shims sold in paks of 3, 4 and 5 to check and adjust Barrel to Receiver fit
Generally Used for Long Shank Replacement Barrels

Will Fit Barrels with a .707" Shank and > .850" O.D. at Receiver

Barrel Shims are used to fit Custom Made Long Shank Barrels, and will move the barrel forward of the receiver.

These are Barrel Shims - These Are NOT Bolt Shims ~ (Bolt Shims are Sold ABOVE)

These are the Original TriggerShims Brand™ CZ / Barrel Shims Custom Made in Our Own Shop from American Made Stainless Steel - NOT Imported from Communist China

Barrel Shims .710" X .850"

Item # SS-CZ/BarShim

Click Boxs to Choose Different Quantities and Assortments

Includes Free U.S. Postage - International add Postage Below

NOTE: These are Barrel Shims not Bolt Shims

CZ Barrel Shim Pak

5 Pak Assortment $15.00 USD 4 Pak Assortment $12.50 USD 3 Pak Assortment $10.00 USD 2 Pak Your Choice $7.50 USD

Choose Assortment Shim Pak

Our Standard Assortment Other - Your Choice

Enter Choice / Request Below

NOTE: These are Barrel Shims not Bolt Shims

👉Link To: ADD USPS TRACKING UPGRADE with SHIPPING PROTECTION

👉Link To: INTERNATIONAL TERMS / POSTAGE

TriggerShims CZ XL Barrel Shims come in the following Assortment Paks;

• 5 Pak Assortment - $15.00 ~ Includes; .0015", .002", .003", .004" and .005"
• 4 Pak Assortment - $12.50 ~ Includes; .0015", .002", .003", .004"
• 3 Pak Assortment - $10.00 ~ Includes; .0015", .002", .003"
• 2 Shim Pak - $7.50  *Specify your size request in Box Below ~ .0015" or .002" - .005"


• You can Request Your Own Assortment Thicknesses In Box Below ~
  Choose From .0015" or .002" - .005"
• Includes Free ~ First Class Mail Economy Shipping U.S.

TriggerShims CZ Barrel Shims come in the following Assortment Paks;

• 5 Pak Assortment - $15.00 ~ Includes; .0015", .002", .003", .004" and .005"
• 4 Pak Assortment - $12.50 ~ Includes; .0015", .002", .003", .004"
• 3 Pak Assortment - $10.00 ~ Includes; .0015", .002", .003"
• 2 Shim Pak - $7.50  *Specify your size request in Box Below ~ .0015" or .002" - .005"


• You can Request Your Own Assortment Thicknesses In Box Below ~
  Choose From .0015" or .002" - .005"
• Includes Free ~ First Class Mail Economy Shipping U.S.

Item# CZ Extractor Spring

CZ Extractor Spring

Now In Stock ~ Volquartsen Matching Extractor Clip Spring

Included in VF457EE Extractor Kit Above👆

$15 includes Free Shipping w/ Tracking - 2 for $25
Ships USA Only - NO EXPORTS

CZ Spring Clip

1 Clip with Free Shipping $15.00 USD 2 Clips with Free Shipping $25.00 USD

Add Comments Below

US Only - No Exports

~ Volquartsen no longer makes VF457EE Extractors ~

Try Pete's Pillars Link Below, tell him TriggerShims sent you

CZ 457 452 455 453 Upgraded Extractor and Holder at Pete's Pillars

~ Gunsmithing Journal ~

~ Important Headspacing Information ~

CZ-457 Accuracy:
The Most Affordable Way to Accurize Your CZ

An In-Depth Article in a Prominent Gunsmithing Journal about Bolt Shims
~ Click Photo to Open CZ-457 Accuracy in a New Tab ~

Quote from Kurt's Article ~ How Bolt Shims Work to Improve CZ-457 Accuracy
"It is no secret that headspace plays a huge role in rifle accuracy. On rimmed cartridges, such as the 17 HMR, .22 LR, and 22 Mag, the headspace is measured off the thickness of the cartridge rim. The tighter the headspace, the more consistent the cartridge will be positioned in the chamber, and the more consistent it will ignite the powder. Accuracy is a direct by-product of consistency and repeatability."

~ Click Here to Open CZ-457 Accuracy in a New Tab ~

BOX#FRDidierCZ457

TECH VIDEO TIP: Test of Shims for CZ 457

An Sizable Test of Bolt Shims and Different Ammunition

Click on Photo Link Right for Didier in Paris Testing Bolt Shims for the CZ 457

The discussion of Rimfire Bolt / Breech Fit and the conclusions apply to all Rimfire Bolt Action Rifles

Painstakingly Testing many different types of Rimfire Ammo to find if there is any benefit to adding Bolt Shims ~ Didier in Paris France gives an in-depth description of the Rimfire Bolt and Shims, Carefully Tests and Records many different types of ammunition and presents the results
~ Click Photo Link to Open YouTube in a New Tab

~OR~ Click Here for Didiers YouTube Video in a New Tab- Test of shims for CZ 457
Please Subscribe and leave a comment and remember what your Mother taught you,
Son, if you cannot say something nice, don't say anything at all
Don't Forget to tell him Lance at TriggerShims.com Sent You!

---

Hello!
Thank you a lot, you make an amazing work for helping shooters like me! I've got a set of bolt shims and it's a game changer for my CZ! I've got one ELR competition in few month, wish me good luck !
God Bless You! ~ Flavien in France

The Results:
Brno 4 Bolt Shim Test at the Range

TECH TIP VIDEO: CZ/Brno Bolt Shim Results

This Tech-Tip Video by Dan at Inrange Rimfire shows the Results After installing TriggerShims Brand™ Bolt Shims in a Brno Model 4
Very Clear Explanation that Applies to All Model Rimfire Bolts

Rimfire Rifles Headspace on the Bolt Face, and different cartridges have different rim thicknesses, Try our TriggerShims Brand™ Bolt Shims and you may be able to improve your accuracy, and Your Satisfaction is Guaranteed!

Longevity

How Long will our Bolt Shim Last at the Range?

TECH TIP VIDEO: CZ/Brno Bolt Shim Longevity Results

This Tech-Tip Update Video by Dan at Inrange Rimfire shows the Results After Several Thousand Rounds in a Brno Model 4 ~ Click on Photo to Open Video in a New Window

I recently asked Dan how our shim was holding up for him and I was pleased to find he had 5 to 6 thousand rounds down range with one shim....

Dan at Inrange Rimfire wrote;
Your shims are gold man, period. They last, perform better than any other I have tried and are the cheapest mod out there that actually makes a difference. I finished 6th in Canada this season in competition and these shims make an absolute difference.

TECH TIP VIDEO by Dayattherange:
CZ452 CZ 455 and Lithgow LA101 with TriggerShims.com Bolt Shims

Day At The Range

Customer TECH TIP VIDEO by Airgunner Bob_O:
CZ457 Head Space Adjustment Using Bolt Shims

TECH TIP REVIEW:
CZ 455 Varmint Tacticool with TriggerShims.com Bolt Shims

Lance, your shims are by-far the best bang for the buck in terms of accuracy improvement. I bought a CZ 455 Tacticool and it seemed to like SK Rifle Match but was still very inconsistent. Like most CZ owners, I started with a trigger spring, then bedding. Still no substantial improvement. I upgraded the trigger guard and tried varying baseplate torque values.
Again, no substantial gains. Then I read about your site at Rimfire Central and decided to give your product a try. I went to my local outdoor range, added the .004" shim while at the shooting table and loaded 5 rounds
My 50 yard groups shrunk from +1.5 MOA to sub 1/2 MOA! The enclosed (target) photo is result, the upper-left was the fouling group then it settled-in! Conditions were 3-7mph wind, 98% humidity, 78 degrees @50yds.
Your product is seriously underrated and unknown by most. I guarantee all of my future shooting conversations will include the impact your products have on accuracy.
Sincerely, Fernando in AL

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

D in Canada Sends His Before and After Targets
100 Yards with his CZ 452 American

Good Afternoon Mr. Shively, I just wanted to thank you for your excellent service and providing an equally excellent product. My shims arrived in short order and I was able to put them to the test. My groups shooting modestly priced ammo improved dramatically in my CZ 452 American, a rifle that I have been shooting with in Silhouette matches for over 14 years. It was up until now that I have been opting for more expensive Eley for matches, and with shortages in lots, finding difficulty with the 77 and 100 meter targets. I expect to see improvements in my scores and a better enjoyment of match days thanks to your product. Please accept my gratitude and Best Wishes to you and Tammy, D in Canada

I receive targets from happy customers weekly, and I like to display them as I get time, here is one of several from our new friend Stefano in Italy, who wrote that his rifle had lost accuracy after 25,000 rounds

CZ 457 Target from Italy

Hello Lance,
I finally managed to try the shims.
With 0.005” I found the precision of when the rifle was new (now has 25,000 rounds).
The rifle has returned to make groups of 5-7mm to 50 metres. Before it began to widen to 14-16mm.
Thank you so much for making this product. Best Regards, Stefano

Targets: 1022

10/22 Targets

Our Ruger 10/22 Trigger Shim Kits are used by Hunters and Competitive Shooters alike. The difference made with our shims is a small part of an overall trigger job, but the difference can be as much as 1/2# Reduction in Pull Weight simply with shims.
One Important Key to Good Shooting is a Good Trigger!

Customer Rickey in North Carolina writes;

Lance, took my 10/22 with rebuilt trigger to the range today and ran 5 different ammos through it, see attached photos. The trigger job using your TriggerShims shims and the Wolff springs did wonders for shrinking my group sizes, .231” average for 5 different ammos ain’t bad, all groups are 5 shots at 50 yards. Thanks again for a great product/service!!! Rickey

If you would like to display your target, send an email to Lance@TriggerShims.com

EABCO for your CZ Barrel,
Trigger Parts and Accessory Needs

Newman Precision Rimfire Rifles

UPGRADE FROM FREE ECONONY SHIPPING ~to~ SHIM TRACKING w/ SHIPPING PROTECTION #ESU

(Shims Only) Orders - Add TRACKING $5.00 - USA ONLY

Shim orders DO NOT include Tracking!

THIS IS FOR SHIMS - ALL OTHER ORDERS Include Tracking

~Click the ADD TO CART button below ANYTIME BEFORE WE SHIP SHIMS~

Enter Customer Shipping Name Below

Continental USA, AK & HI ONLY
* USPS Ground Advantage™ Service
* Replacement for items lost or damaged during shipping

~Click Here~ for U.S. PRIORITY Mail

👉Link To: ADD USPS TRACKING UPGRADE with SHIPPING PROTECTION

👉Link To: INTERNATIONAL TERMS / POSTAGE

"American Made Gun Shims" - GunShims.com - TriggerShims.com
and
TriggerShims is a Trademark
of
Shively Sales
Michigan Center, Michigan

All Material Copyright of Lance Shively
2008 ~ 2025

God Bless and Make America Great Again!

BY PURCHASING SHIVELY SALES PRODUCTS
YOU ASSUME ALL RESPONSIBILITY FOR THEIR SAFE INSTALLATION AND USAGE.
YOU RETAIN ANY AND ALL RESPONSIBILITY FOR YOUR OWN ACTIONS. Be Safe!!

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 Webmaster@TriggerShims.com

I Reserve the Right to Refuse Service to Anyone

Republic.... I like the sound of the word. It means people can live free, talk free, go or come, buy or sell, be drunk or sober, however they choose. Some words give you a feeling. Republic is one of those words that makes me tight in the throat - the same tightness a man gets when his baby takes his first step or his first baby shaves and makes his first sound as a man. Some words can give you a feeling that makes your heart warm. Republic is one of those words. - John Wayne in the Alamo