Installation Instructions & Review
What Is The Cominolli Safety?
The Cominolli Safety is an aftermarket product for
Glocks that adds a manual thumb safety to the pistol. The product is
called a Cominolli MANUAL SAFETY KIT FOR GLOCKÂ®, and is available at the
Cominolli website (cominolli.com) and other gun parts dealers. It costs
about $90.00 USD +S/H.
for a simple explanation of how the Cominolli Safety works.
The installation of a Cominolli Safety is a
Glock modification that requires cutting a permanent slot into the
frame of your Glock pistol. A paper template is provided showing where
to cut the slot. Cutting the slot with the paper template is "do-able"
but you risk cutting an uneven or sloppy cut which may ruin the looks of
your Glock or hamper the function of the safety.
Cominolli makes and sells a Cominolli Frame Slotting
Fixture (For Manual Safety Kit-MSK Glock Pistols) for $87.00 USD +S/H
(see pictures below). Get the Frame Slotting Fixture if you want to do a
professional installation. The slotting fixture eliminates (or greatly
reduces) the chances of screwing up your Glock.
The Cominolli Safety is a do-it-yourself
installation. Alternatively, you can pay someone to do it for you, but
you may have to mail your gun to professional installers for the
Cominolli Glock Manual Safety
When "ON SAFE" (Lever up) the
slide will function normally, allowing loading and unloading
while the trigger bar is locked in place.
When "OFF SAFE" (Lever Down)
weapon is ready to fire.
COMINOLLI Glock MANUAL SAFETY Kit Contents
|Cominolli Manual Safety Kit For
|Cominolli Manual Safety Kit
||3/32" End Mill Tool For Cutting
||Cominolli Manual Safety Kit
||Cominolli Installation Templates
Cominolli Frame Slotting Fixture
(For Manual Safety Kit -MSK Glock Pistols)
Slotting Fixture Package Contents
|Cominolli Frame Slotting Fixture
Cover Sheet For Manual Safety Kit-MSK Glock Pistols
||Cominolli Frame Slotting Fixture
(Front & Back Sides)
|Cominolli Frame Slotting
COMINOLLI Glock MANUAL SAFETY Kit Installation Instructions
Cominolli Manual Safety
A few days ago my friend brought up the subject of
getting a manual safety for his Glock 26. He carries his Glock 26 in a
fanny pack. He would like to carry it with a round in the chamber but he
is concerned with taking the gun out in a high stress situation and
inadvertently hitting the trigger. He decided to look into the various
safety options for Glocks and the Cominolli Safety caught his eye. After
researching the product, he ordered one for his Glock 26. The following
is an email comment he made after he completed the installation of his
Cominolli Glock Manual Safety.
|"I put the Cominolli safety on the 26.
It was very easy and simple. It took less than an hour and if I
had to do it again, it would take about 20 minutes. It is a very
simple and neat design and should be fool proof. It physically
locks the trigger bar when the gun is in the ready state. The
safety snaps on and off easily and it is in an excellent
ergonomic position to actuate it. Based on the experience thus
far, I would highly recommend it. I will bring it Thursday so we
can try it. I have attached the pictures I took during different
phases of the modification. You can select the ones you feel are
FINDING INFORMATION ABOUT THE COMINOLLI GLOCK MANUAL
SAFETY - If you search the internet for the Cominolli manual safety for
a Glock you will probably find many debates about whether Glocks need
manual safeties or not, but you won't find much about how the Cominolli
Safety works or the details about how to install it. Surprisingly, even
the Cominolli website has little information about the product (see
below). That is what this web page will try to provide.
Cominolli Glock Manual Safety description
Safety system offers a manual safety lever while
retaining all 3 internal Glock safeties. Parts are chrome-plated
stainless steel with a black matte finish. Frame modification and
gunsmith installation will be required.
Ergonomically designed and located
Positive engagement and disengagement
With manual safety engaged, all three Glock
passive safeties are locked in place
Pistol can be loaded and unloaded with manual
safety engaged, thus diminishing the chance of an unintentional
Long-wearing Stainless Steel, hard chrome plated
parts with matte black tactical finish
Cominolli Glock Safety Evaluation
My friend brought his Glock 26 with the newly installed Cominolli
Safety to the range for us to shoot and evaluate.
My Friend's Evaluation Of The Cominolli Glock 26 Safety
Installation of the Cominolli Safety was easy and only took about
half hour. The next one he does will probably only take 20
minutes.(note- my friend is a pretty smart guy though and a retired
Cutting the slot in the Glock was simple and fool proof. The
actual cut only took about 10-15 seconds.
Using the Cominolli Installation Jig makes for a professional
The Cominolli Glock Manual Safety works exactly as advertised.
He is very impressed with the elegance of the design of the
safety and has confidence in it's operation and function.
He will likely modify his Glock 17 with a Cominolli Safety.
He had NO NEGATIVE REMARKS about the Cominolli Safety.
My Evaluation Of The Cominolli Glock 26 Safety
The Cominolli Glock Safety didn't change the looks of his Glock
26. The Glock 26 with the Cominolli Safety looked just like my
standard Glock 26 except that it had an unobtrusive thumb safety.
The slot cut into the Glock looked like it was done at the factory.
The safety lever was very easy to operate with my thumb. It
didn't take much force to move it down into the fire position and
you can feel and hear a noticeable click when it locks in.
I tried to fire the gun with the safety ON SAFE. The trigger
would not move back and the gun would not fire. I repeated this
With a simple flick of my thumb the safety lever moved down and
the gun fired. After one session at the range getting used to the
new safety would become second nature.
I found that shooting the gun with the safety
We showed the Glock Safety to a couple other shooters that we
know. They were not Glock enthusiasts but were very impressed with
the installation of the safety and made jokes about my friend buying
his gun from the factory that way.
We were both wondering why the Glock Company does not offer this
option on their pistols. It seems like it would open up another
market for them.
MANUAL SAFETY QUESTIONS
Do Glocks Have Manual Safeties?
No, factory Glocks do not have manual safeties built
into them. Aftermarket products such as the Cominolli Manual Safety Kit
For Glocks are available for purchase and installation.
Does The Cominolli Safety Void The Glock Warranty?
No, it is reported that the Cominolli Safety
modification to a Glock does not void the GLOCKÂ® warranty.
Do You Need A Manual Safety ON A Glock?
There is much debate on whether you need a manual
safety on a Glock. This web page is not a forum for the pros and cons of
Glock manual safeties other than what is listed below.
Why Glocks Need Manual Safeties
For carry purposes, if you are concerned that
someone will take your gun away from you and use it against you a
manual safety on your Glock may confuse the bad guy or buy you a few
seconds to act.
For carry purposes, if you don't carry your
Glock in suitable holster but rather in a fanny pack or in your
pocket a manual safety offers and extra level of safety against
Which Glock Pistol Models Can The Cominolli Safety Be Installed In?
The Cominolli Safety will install into all models of
the GLOCKÂ® except Glock 36.
How Does The Cominolli Safety Work?
Once installed, the Cominolli Safety works just like
all thumb safeties on pistols. Just flip it down with your thumb to
fire. Flip it up to be safe. When the safety is engaged you can load or
unload the Glock with an extra level of confidence and safety.
What Is The Cominolli Safety Made Of?
The Cominolli Safety is made of chrome plated
stainless steel and has a black matte finish.
Cominolli Safety Questions & Comments
Subject: Help With Cominolli Safety Installation
Sent: October 30, 2011
Hello, I have installed 4 of these safetys and on with the addition of lake
storm barrels I have two model 27 s a model 22 and a model 21 sf I have had
trouble with the older model model 27 stove topping or just not ejecting.
any ideas about this I had to do alot of work to get the model 21 to come
together I cant remember if I have a fail to eject with the model 22 0r the
21 . All but the older model 27 are all new, I used the jig to cut the
opening for the safety. Any help would really help me out.
Response - Allen
Sorry, but I can't help you.
My friend added the Cominolli safety to his Glock 26 and had no problems
The only thing that I could suggest to you is to go the Cominolli website (cominolli.com)
and ask them your questions if you feel your problems are related to the new
THE FOLLOWING INFORMATION IS FROM THE COMINOLLI WEBSITE
MANUAL SAFETY KIT FOR GLOCKÂ®
$90.00 USD +S/H
Helps Prevent Unintentional Discharges. Manually engaged safety lever
provides an extra level of security and safety for Glock owners. Blocks
trigger movement, allows the slide to be cycled and pistol loaded or
unloaded with the safety on. Operates easily with your right-hand thumb.
Contact pad is easy to engage, yet wonâ€™t interfere with holster fit. All
Glock passive safeties continue to function normally. Gunsmith installation
SPECS: Thumb Safety - Plastic trigger housing, black. Steel parts, black
thumb pad. Pad - Â½" (12.7mm) long, Â¼" (6.35mm) wide. Includes instructions
with positioning template, replacement trigger housing, plus thumb lever,
detent pressure plate, spring and trigger bar guide. Fits all models except
Safety Installation Jig
$87.00 USD +S/H
Helps Prevent Unintentional Discharge. Holds your Glock frame securely and
has two, machined slots that correspond with the cut youâ€™ll have to make to
install Cominolliâ€™s Manual Thumb Safety Slot marked â€œSMâ€ is for 9mm, .40 S&W,
and .357 SIG; slot marked â€œLGâ€ is for .45 ACP and 10mm. NOW INCLUDES the
3â„32" End Mill in the kit! Just supply your own high-speed rotary tool to
properly make the cut. DelrinÂ® guide makes it easy to cut the correct angle.
SPECS: Safety Installation Jig - Aluminum, silver matte finish. 3Â½" (9cm)
long, 5" (12.7cm) high, 3â„8" (9.5mm) thick. Includes frame locating pins and
delrin guide. 3â„32" End Mill - High speed steel. 3â„32" (2.4mm) diameter,
1â„8" (4.8mm) shank. Single end, center cut.
Was This Page Helpful To You?
If so, please Like Us on Facebook and Google Plus.
Ask A Question/Tell Your Experience