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Revolver Cylinder Shims / Endshake Bearings
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Revolver Shims
Cylinder Shims
EndShake Bearings
End Shake Shims
Yoke Shims
Crane Shims
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End Shake Bearings / Cylinder Shims for Colt, Ruger,
Smith and Wesson, Taurus, Dan Wesson and other Revolvers
Smith and Wesson and Taurus Yoke Shims
Colt, Ruger and Dan Wesson Crane Shims
Installation Instructions are Not Included
The easiest way to Measure your Barrel to Cylinder Gap is with a simple blade type feeler gauge.
I sell a decent quality imported set you can include in your orders.
This Gauge will measure from .0015" up and is perfect for general use.
The price is $11.95 and includes Free Shipping
Our Shims are Available in .002" through .007"
and some 008" and .009"
Order Any Kit on This Page and Request Custom Thicknesses via Email,
Drop-Down Box
or use "Note to Seller" in PayPal
Barrel-Cylinder Gap and Endshake
The gap between the back of the barrel and the front of the cylinder is known as the Barrel-Cylinder (B-C) gap. The Front-To-Back Movement of the Cylinder is the Endshake.
In order to properly measure these clearances you will need a Feeler Gauge Set. K-D Tools USA Made # 161 Deluxe Feeler Gauge is available all over the internet and at most good auto parts stores for under $10
To check B-C gap, hold the cylinder rearward and insert the (thickest that will fit) feeler between the Barrel and the Cylinder, this is your Barrel-Cylinder Gap, write it down, it should be between .004" and .008"
Next, hold the cylinder forward and re-check the gap, write it down.
There may be no clearance here at all, the cylinder may touch.
The difference between the two numbers is the amount of movement or Endshake your cylinder has, it should be between .001" and .004" on most Ruger Double Action Revolvers, other manufacturers clearances may vary
Our Cylinder Shims can be used to adjust your B-C Gap and Endshake.
Cylinder Shims will move the Cylinder Back, or Rearward, ending
Barrel to Cylinder Contact and/or Rubbing, and give better Hammer Strikes.
Crane or Yoke Shims will move the Cylinder Forward, to compensate for wear.
Available in the following thicknesses; .002", .003", .004", .005", .006", .007",
and some in 008" and .009"
To request special sizes, send and e-mail with your order.
FREE SHIPPING INCLUDED on ANY SHIM KIT!
Shipping/Mail Upgrades/Tracking Information
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New and Old Model Ruger Single Action
Revolver Cylinder Shims
These Shims are used on the Cylinder to remove excessive end-play
Made of Stainless Steel, in thickness of .002" through .009"
Two Diameter of Shims Available,
Small .251" X .376" and Large .251" X .420"
Small Ruger Single Action Revolver Cylinder Shims 
fits Ruger Blackhawk and Others
Fits Ruger Old Army
Also fits Freedom Arms 83 Series Revolvers
These Shims will fit 1/4" Base Pins and Gas Rings 3/8" and Larger
Nominal O.D. of .376" X I.D. of .251"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Large Ruger Single Action Cylinder Shims 
fits Ruger Super Blackhawk and Others
These Shims will fit 1/4" Base Pins and Gas Rings .420" and Larger
Nominal O.D. of .420" X I.D. of .251"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Ruger Double Action Revolver
Cylinder / Endshake Shims
Our Shims will fit Super Redhawk,
Redhawk, GP100, Security-Six, Speed-Six, and Police Service-Six Double Action Revolvers.
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .401" X I.D. of .299"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Ruger SP101 Revolver Cylinder / Endshake Shims
Our Shims will fit the Ruger SP101
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .337" X I.D. of .221"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Colt Anaconda Revolver Cylinder / Endshake Shims
Our Shims will fit the Colt Anaconda
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .337" X I.D. of .221"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Colt Python Revolver Cylinder / Endshake Shims
Our Shims are Custom Made
for the Colt Python 
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .357" X I.D. of .265"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Colt Single Action Army Revolver Cylinder / Endshake Shims
Our Shims will fit the Colt SAA
Fits First and Second Generation Colt SAA and Authentic Reproductions only.
Also fits Third Generation with Removable Bushing.
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .424" X I.D. of .357"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Colt Police Positive Revolver Cylinder / Endshake Shims
Our Shims will fit the Colt Police Positive
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .401" X I.D. of .337"
(Note ID is Slightly Oversize)
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Colt Official Police Revolver
Colt Officer's Model Revolver Cylinder / Endshake Shims 
Our Shims will fit the Colt Official Police and Colt Officers Model Revolver
Fits many "E" Frame Revolvers
Also known to fit Colt New Army and Navy
Pythons up to the early 1970's
1969 and prior (pre-MK III) Troopers
Early I-Frame with 1-Piece Extractor Rod, including models 3-5-7, All Trooper .38/.357 and Early Python
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .458" X I.D. of .362"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Colt Army Special (Early) Crane Shims
Made from USA Full Temper 300 Series Stainless Steel
Available in 002" Through .008" Stock
Nominal O.D. of .500" X I.D. of .419"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Colt M1917 / New Service Cylinder Shims
Made from USA Full Temper 300 Series Stainless Steel
Available in 002" Through .008" Stock
Nominal O.D. of .480" X I.D. of .376"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Colt M1917 / New Service Crane Shims
Made from USA Full Temper 300 Series Stainless Steel
Available in 002" Through .008" Stock
Nominal O.D. of .511" X I.D. of .424"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Smith & Wesson K, L, N Frame Revolver Cylinder Shim / End Shake Bearing Paks
Stainless Steel K, L, N Frame Cylinder Shims - Endshake Bearings to reduce Cylinder End Play
Cylinder Shims can be stacked to obtain proper clearance.
Nominal O.D. of .376" X I.D. of .265"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Stock # SWKLN-CS
Smith & Wesson K, L, N Frame Revolver Yoke Bearing Paks
Stainless Steel K, L, N Frame Yoke Shims - Yoke Bearings to Adjust Cylinder End Play
Yoke Shims can be stacked to obtain proper clearance.
These Shims are installed between the Yoke and Frame.
Yoke Bearings are necessary when setting up the Yoke and Cylinder for Minimum Endshake, especially on S&W Models (1988 Series & Later) that have the Spring Loaded Plunger in the Front Side Plate Screw.
Installation Instructions are not included.
Nominal O.D. of .498" X I.D. of .314"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Stock # SWKLN-YOKE
Smith & Wesson J Frame - Center Fire Revolver Cylinder Shim / End Shake Bearing Paks
Stainless Steel Centerfire J Frame Cylinder Shims - Endshake Bearings to Reduce Cylinder End Play 
Cylinder Shims can be stacked to obtain proper clearance.
Nominal O.D. of .294" X I.D. of .190"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Center Fire Revolvers Only
Stock # SW-JCF/CS
Smith & Wesson J Frame - Rimfire .22 Caliber Revolver Cylinder Shim / End Shake Bearing Paks
Stainless Steel Rimfire J Frame Cylinder Shims - Endshake Bearings to Reduce Cylinder End Play
Fits J-Frame .22 Caliber Models
Cylinder Shims can be stacked to obtain proper clearance.
Also fits some Older S&W I Frame Models
and .32 S&W Long J Frame
Nominal O.D. of .357" X I.D. of .242"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Rimfire Models Only
Stock # SW-JRF/CS
Smith & Wesson J Frame Revolver Yoke Bearing Paks
Stainless Steel J Frame Yoke Shims - Yoke Bearings to Adjust Cylinder End Play 
Yoke Shims can be stacked to obtain proper clearance.
These Shims are installed between the Yoke and Frame.
Yoke Bearings are necessary when setting up the Yoke and Cylinder for Minimum Endshake.
Fits J Frame Revolvers with .263" Yoke Shaft.
Installation Instructions are not included.
Nominal O.D. of .442" X I.D. of .265"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Stock # SWJ-YOKE
Taurus Cylinder / Endshake Shims
Our Shims will fit Many Taurus Revolvers
Including Models 65, 66 7 Shot Model, 82, 85 etc.
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .345" X I.D. of .242"
Note: Taurus 66 6 Shot Model use - Colt SAA Cylinder Shim
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Dan Wesson Cylinder / Endshake Shims
Our Shims will fit Large Frame Dan Wesson Revolvers
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .442" X I.D. of .376"
For Large Frame Dan Wesson Revolvers
Cross Reference:
Fits Taurus 44 and 454
Between #69 Bushing and Yoke
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Dan Wesson Cylinder / Endshake Shims
Our Shims will fit many Small Frame Dan Wesson Revolvers
Made from USA Full Temper 300 Series Stainless Steel
Nominal O.D. of .400" X I.D. of .314"
Fits Many Small Frame Revolvers
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
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H&R Revolver Cylinder / Endshake Shims
Custom Fit for Harrington & Richardson Revolver Model 604
- may fit others
Made from USA Full Temper 300 Series Stainless Steel
Available in 002" Through .009" Stock
Nominal O.D. of .442" X I.D. of .310"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
3/8" Cylinder / Endshake Shims
Standard Size Shims will fit Revolvers needing a 3/8" I.D.
and 1/2" O.D.
Made from USA Full Temper 300 Series Stainless Steel
Available in 002" Through .009" Stock
Nominal O.D. of .500" X I.D. of .376"
2 Pak Comes in .002"
4 Pak Assortment comes with 2 each .002" and .003"
6 Pak Assortment comes with 2 each .002", .003" and .004"
12 Pak Assortment comes with 3 each .002", .003", .004" and .005"
24 Pak Assortment comes with 6 each .002", .003", .004" and .005"
30 Pak Gunsmith Special Assortment comes with 6 each .002", .003", .004", .005" and .006"
-OR- Choose any Pak and Specify your Thickness via Drop-Down Box,
e-mail or use "Note to Seller" in PayPal
Price includes Free Shipping
Cylinder / Yoke / Crane Shims
Referenced by Size
.190" X .294" S&W - J CenterFire
.221" X .337" SP101 / Colt Anaconda
.242" X .345" Taurus
.242" X .357" S&W - J Rimfire / I Frame
.251" X .376" RSA Small
.251" X .420" RSA Large
.265" X .357" Colt Python
.265" X .376" S&W - KLN Cylinder
.265" X .442" S&W - J Frame Yoke
.299" X .401" RedHawk RDA
.310" X .442" H&R 604 Revolver
.314" X .401" Dan Wesson Small
.314" X .498" S&W - KLN Yoke
.337" X .401" Colt Police Positive
.357" X .424" Colt SAA
.362" X .458" Colt Official Police
.376" X .442" Dan Wesson Large
.376" X .480" Colt M1917 / New Service Cylinder
.376" X .500" 3/8" / H&R Sportsman
.419" X .500" Colt Army Special Crane - Early
.424" X .511" Colt M1917 / New Service Crane
Shim Thickness Color Code
.002" - Black
.003" - Blue
.004" - Purple
.005" - Red
.006" - Orange
.007" - Green
.008" - Pink
.009" - Brown
Hi Lance,
Your shims worked like a charm! I had a couple of S&W's with really tight B/C gaps - an early 28 that I just picked up with B/C gap between 0.002 and 0.004 (due to a slightly non-concentric cylinder face), and a 686 that I’ve had for a while that had some custom work done with a gap of just under 0.004. A bit of end-shake was enough to cause a bit of B/C interference on both. The 0.002 did the job on the 28, and the 0.003 solved the 686. I couldn’t be happier.
You have a fantastic product at an amazing price. I will spread the word.
Thanks and God Bless,
- Gord in Canada
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