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Shim Kit F.A.Q's
Q. What can
I expect when installing your Shim Kit?
A. Our Shim Kit will bring
your trigger assembly up to the best it can produce, with smooth reliable operation. It will properly center the Trigger,
Hammer, Sear and Disconnector reducing side play, and can be used with all stock and most aftermarket triggers
and hammers.
Best of all, your satisfaction is guaranteed 100%!
Q. How much will the shim kit reduce my trigger pull?
A. The Shively Sales Ruger 10/22 Trigger Shim Kit will smooth a trigger's pull by properly centering the
Trigger, Sear, Disconnector and Hammer inside the Trigger Assembly, removing excess play and rubbing. Properly centering
these parts is important for several reasons, first, to reduce friction and felt trigger pull caused by mis-alignment, second,
to align the Hammer and Sear for consistent engagement, and also to prevent the Trigger from rubbing the Housing when
it is pulled.
Field reports and feedback have all been very favorable, from an increase in smoothness
to a reduction in felt pull.
Q. Will
installing a Shim Kit give me a "Target Trigger" or "Hair Trigger" ?
A. The Shim Kit will reduce friction caused by rubbing and mis-alignment. It is a key part in
doing a Trigger Assembly upgrade.
It will not by its self, give you a "Target Trigger".
It will reduce
felt trigger pull, some customers claim by a considerable amount, but I do not make these claims, only that it will reduce
felt trigger pull caused by friction.
Q. What
can I do to get a super light, smooth, Target Trigger?
A. There
are several steps you can take;
The Hammer is the major culprit of a heavy trigger, followed by friction, springs,
sear, and polishing the internal parts.
I have a Power Custom Hammer and Sear kit in my 10/22, along with a Shim
Kit, and Wolff Reduced Power Springs, and my gun measures in at just under 3 pounds of trigger pull.
It is smooth, consistent,
and has greatly increased my target scores over the stock trigger.
All of the parts I used on my trigger upgrade are
available to purchase on this web site, MichiganCenterOutdoors.com
Q. How many shims should I install?
A. A total of 8 shims are needed to do a complete
shim job on a 10/22
You need 2 shims for the Hammer on the Hammer Pin, 2 for the Disconnector at the Disconnector
Pin, 2 for the Sear at the Trigger Pivot Pin, and 2 for the Trigger at the Trigger Pivot Pin.
The 8 Piece Standard Shim
Kit supplies all needed shims, and would prevent the trigger assembly parts from rubbing.
Q.
Why would I need or want a 24 Piece Deluxe Shim Kit?
A. Over the many years of production of the Ruger 10/22, tolerances
have ranged from tight to loose. On some guns, the Standard Kit will take up excessive play in the trigger assembly, and at
the very least stop the individual parts from rubbing the sides.
On most guns, a stack up of shims will be needed to
produce the ideal fit.
The ideal fit would be to eliminate most of the side play in the trigger assembly, so that the
Hammer, Sear and Disconnector would engage in the same place each time.
You must however, leave enough play to prevent
binding, at the very minimum .002" to .004" of room should be left at each pin location.
Q. How can I tell how many shims I will need?
A. The easiest way to measure your trigger assembly is with a
simple feeler gage.
With the trigger assembly removed from the receiver, push the Hammer Pin L to R about 1/8",
you do not need to remove it. Slide a feeler gage between the hammer bushing and the housing.
Start out with .006"
to .008", and work your way up .002" at a time until you find a tight fit.
To give you an example, (see Figure
1) with a feeler gage my 10/22 had a loose .018", and a tight .019" fit. I installed two .008" shims. On my
Trigger at the sear however, there was a little more room, and I ended up installing 2 .008" and 2 .002" shims.
(see Figure 2)
You will want to install an equal quantity of shims on each side, and remember, it is better to be a little
loose rather than too tight!
It is of the utmost importance
not to shim too tightly!
You will want some play, and no binding on any parts.
You Are Solely
Responsible For The Safe Operation of Your Firearm.
| Figure 1 |
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| Measuring Hammer Clearance w/ Feeler Gage |
| Figure 2 |
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| Measuring Trigger/Sear Clearance w/ Feeler Gage |
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Q. I have
a new "Ruger 10/22 Plastic Trigger Assembly"
It has the bushings built into the hammer, do you have
anything to help me? -Scott
A. Yes! Michigan
Center Outdoors carries factory bushings for bushing style hammers, a Volquartsen replacement hammer kit with bushings, a
Power Custom Hammer kit with bushings, and special shims that
you can use on your stock hammer without changing it or the bushings.
Please specify when ordering shims for "PLASTIC
TRIGGER ASSEMBLY"
Q. Your
Wolff 10/22 Rifle Tune-up Pak includes Ruduced Power Trigger and Sear Springs, but has an Extra
Power Hammer Spring, why? -Owen
A. Good Question Owen,
The reduced power trigger and sear spring as one would expect help to lighten the trigger pull, but the reason the hammer
spring is extra power is this; the extra power hammer spring gives you a faster hammer, more consistant ignition, but most
importantly less time to move off the target from the time you pull the trigger until the bullet exits the barrel.
| 10/22 8 Pcs. Kit w/ Buffer and 18076 Tune-up Pak |
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| Combo Kit |
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