"The best and only
GRT original Gamo-Theoben replacement trigger
in the world. It's
not just a trigger mod.
Nothing, absolutely nothing else compares to it."
you know that trigger pull and trigger
ergonomics is one of the greatest contributors to
accuracy and consistency? See below for
And just what will the GRT-III trigger blade fit?
See the notice below
regarding the late production Gamo's with a plastic
The GRT-III trigger blade will fit almost any
rifle using the Gamo/Theoben type trigger including:
all early model rifles including any not listed
here. (See note below)
Gamo Hunter all (including the 1250)
Gamo Shadow (all)
Gamo Nitro (all)
Gamo Recon (all)
Gamo Viper (all)
Gamo Big Cat
WHAT TRIGGER SHOULD I
GRT-III GRT-4G CBR??? If
you are in doubt about
which trigger you need to order, click
HERE and compare your trigger to the pics to
the Benjamin Trail models.
There has been a change in some of the BenjaminTrail model triggers.
Before you order the GRT-III
for the Benji Trail models
NOTE FOR GAMO OWNERS:
If you have a late model Gamo with a plastic trigger
and safety, the GRT-III trigger will not work. If in
doubt, check it with a magnet. If it is plastic,
OWNERS(and some Crosman's). If your gun has
a plastic trigger, the GRT-III trigger will not
work. If in doubt, check it with a magnet. If it is
plastic do not order the GRT-III.
here to see
** For these four models only.
The QB-23, QB-88, TF 58,
TF-59 and Daisy 130A require a special replacement fat pin
as part of the installation and are supplied with
the GRT-III at no charge. Be sure to inform me by e-mail me when ordering triggers for these models.
Stoeger X-10, X20 and X-50 see
special instructions and to see
Benjaman Trail NP XL
owners....before you order
GRT-III may not properly adjust in some Benjaman
Trail NP XL guns......DO NOT ORDER THE GRT-III FOR THE TRAIL NP XL UNTIL YOU READ
Benjaman Trail NP-XL and Crosman Titan GP
additional trigger info....
The GRT-III trigger will not work in any of
the RWS, Walther, Webley or most air guns not listed
above. Also, it will not work in the late Gamo CFX
with the plastic trigger
If your gun has a trigger similar to the B-18/19's
or the Gamo's, there is an excellent chance that the
GRT-III will work in your gun.
Every GRT-III trigger blade that is sold is
completely assembled, tested and pre-adjusted in a
Gamo trigger for the customer and all you need to do
is drop it in on most guns. Installation
instructions are provided. It's a very simple
operation requiring a couple of screwdrivers and
about 15 minutes or less for most people.
Take a look at the simple installation
a PDF file courtesy of Chuck Adams
see the PDF installation
To see the complete
installation video play list by Bert Wolf (Brutuz62) for the
GRT-III and GRT-4G triggers,
Keep in mind that the installation videos are only
supplemental to the written instructions and do not
take the place of the written instructions.
Why The GRT-III?
What does the GRT-III trigger blade do?
The GRT-III trigger blade changes the internal
geometry as well as the ergonomics of the original
Gamo/Theoben type trigger and converts it from an
allegedly 2-stage trigger to a true 2-stage trigger
geometry while at the same time dramatically
reducing the pull weight and not compromise the
safety of the trigger. The ergonomic design change
greatly enhances the trigger with a far more
controlled trigger pull. Together they provide more
accuracy, consistency and a vastly improved firing
cycle, something that trigger mods cannot do.
It's a matter of what you expect for what you pay
for, and with the GRT-III trigger blade you get it
What is the GRT trigger blade made of?
The GRT-III trigger blade is Gold Anodized
will adapt to almost all Gamo's and Gamo clones and in
most cases with no modification needed by the owner.
(There may be a few exceptions).
Although the components of the GRT-III trigger
blade mod are not under heavy stress, their ability
to hold a precision adjustment over a long period of
time is critical to delivering the long term
enhancement to accurate shooting that you paid for.
It's for this reason that the GRT-III trigger blade
is CNC (Computer Numerically Controlled) machine
fabricated from high grade aluminum alloy known for
its strength. The blade is then anodized for wear
and corrosion resistance
In the OEM Gamo, Chinese and Theoben “Gamo-type”
triggers, the "1st stage" is nothing more than
pre-travel, and is not a true first stage, as the
trigger blade is doing nothing more than moving
against the resistance of the blade return spring.
Nothing is actually happening until what most
believe is the "2nd stage” pull begins. With the GRT-III
trigger, all of the travel of the blade does useful
We have sold well over a thousand GRT-III trigger
blades to satisfied customers. Why do they buy???
Because they are replacing the problem with a
genuine fix, the complete trigger blade itself. They
do this rather than attempting a less expensive
trigger mod to rig or work around the true existing
problem with mediocre or second rate repair. The GRT-III
trigger blade resolves all of the trigger problems
and not just reducing trigger pull. That and the
superior beauty, quality, workmanship, it's safe and
the fact that it works and that it has a long past
with a long proven track record the world over.
But it's not just the improved trigger pull that
makes the GRT-III trigger so great. Just as
important and even more so, are ergonomics of the
trigger. It's what makes the big difference in the
improvement of both accuracy and consistency. There
are a couple of guys out there that market OEM
trigger insert mods that will say that ergonomics
doesn't matter.... but......, those that have
owned both the trigger mods and the GRT-III trigger
blade know the difference and given the choice, will
choose the GRT-III trigger every time.
Be aware. As with almost all other successful
products, there will always be someone attempting to
come up with a better or cheaper idea that will
undoubtedly prove to be inferior or substandard and
perhaps even in some cases, dangerous. None of
these will match the class, superiority and
efficiency of the GRT-III trigger blade. There
is nothing as a replacement part or mod that is even
close to being comparable to it.
To see a sampling of what our customers have
Installing the GRT-III trigger blade.
Unlike trigger mods, installing the GRT-III trigger
blade is a very simple procedure and does not
require removing the trigger from the gun. The GRT-III
trigger is truly a drop in trigger. It can usually
be done in ten minutes or less and requires a
Phillips head screwdriver (or a #25 Torx screw
driver in many Gamo's) and a small standard blade
screwdriver in most cases and an Allen key that is
It is not usually necessary to remove the trigger
assembly from the gun to install the mod and is
shown here for better visual understanding. The top
right picture depicts what the original trigger
blade looks like when removed with the parts shown
directly under where they go, and the right picture
depicts the trigger blade and mod parts and where
they are located. The trigger, trigger return spring
and its retaining pin are not reinstalled for the
modification, but be sure to save for later use if
It is very important to read the instruction
that comes with the GRT-III in their entirety
before installation. Be very careful not to remove
the wrong trigger pivot pins. The pins are pointed
out in the instructions that you will receive when
The Gamo CFX and some of the other late model
guns with synthetic stocks have the forestock
retaining screws covered by the rubber hand
pads/grips located on each side of the forestock.
These pads must be removed to get to the screws.
Removing them is very simple. Insert a small blade
screw driver or something similar under the rear
center of the pad/grip and carefully lift enough to
get your fingers under enough to pop it off. They
are held in place by rubber buttons and pop into the
stock. To reinstall them, just press them back in.
Remove the screws that are used in most CFX’s (and
some other Gamo’s) with a #25 Torx screwdriver.
Trigger troubleshooting guide and abnormalities
that are rare but may be encountered.
AND... I've saved the best part for last:
Because of the additional setup and machining
stage's the production costs have risen. The overall
production costs have more than doubled....
however.... the original selling price for the GRT-III
trigger blade has been reduced by nearly 20%.
Yep...you read it right, about 20% less than it's
Originally it sold for $35.00
plus $2.50 S&H for a
total of $37.50.
It now sells for $29.50
plus $3.50 S&H for a total
So there you have it. I'm looking forward to being
of service to you.
above on Charlie for contact