GOG G-1 Guide

G-1TM
Operation and adjustment instructions

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QUICK START
01 02 03
Unpack the G-1TM and its stock. Using the included 1/8-inch allen
wrench, attach the stock to the rear of the G-1 with the two included
screws.
Install the included barrel
into the G-1TM, screwing it
into place hand tight. Put the
supplied barrel blocker over
the end of the barrel, securing
its cord as far back on the
G-1TM body as possible, and
cinching it tight.
Fill the loader with paintballs. If it is a powered loader, turn it on. While wearing ASTM compliant paintball goggles, in an area where all bystanders are protected, remove the barrel
blocker and re over a chronograph to measure the velocity. Using a 5/32-inch allen wrench on the adjuster in the bottom of the vertical regulator, turn clockwise to increase the
velocity/pressure, and counter-clockwise to decrease. Take three or four shots after every adjustment to allow the gas pressure inside the G-1TM to stabilize. Adjust until the marker
is ring consistently within the limits for the eld where you are playing (for safety reasons, never adjust the G-1TM to re at greater than 300 feet per second). Depending on what
modes of re are allowed at the eld where you are playing (semi-automatic, rebound, etc.) you may need to adjust the G-1TM’s ring mode. See the Electronic Adjustment section
for more information.
Fit a paintball loader into the feedbeck
of the G-1TM. Use a 7/64-inch allen
wrench to lock the loader in place.
Powered force-feed loaders are
recommended, as the G-1 has little
recoil, and can easily outpace an
unpowered or agitating loader.
Gently gas up the G-1TM by
slowly turning on the air system
or screwing the CO2or screw-
in style HPA system into the
bottom-line ASA.
A gentle rise in pressure is
important, as a sudden blast
may reduce the service life of
the G-1®’s internal components.
Turn on the G-1TM by
pressing the power button
momentarily.
Although the power button
serves as the G-1TM’s safety
switch to prevent accidental
ring, it should never be relied
upon in place of a barrel blocker
and proper eye protection.
04 05 06
STOCK BARREL BLOCKER FILL TANK
LOADER TURN ON GAS TURN ON THE G-1TM
ADJUST VELOCITY
Have your compressed air
(HPA) or CO2 tank lled by
a person who is properly
trained to do so. If using an
HPA system with an on/off
valve, make sure it is in the
OFF position. If using a CO2
tank or screw-in style preset
HPA system, ll it while it is
removed from the marker.
07
00

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Quick Start
Table of Contents and Safety Warnings
Getting Familiar
Barrel Blocker / Hopper
Gasses
Battery
Paint
Trigger Adjustment
Flashlight Mounting
Firing Modes / Dwell
Unloading / De-Gassing
Field Stripping
Advanced Maintenance
Feedneck Position
Vertical Regulator
Troubleshooting / Warranty
Parts Diagrams
00
01
02
03
04
06
07
08
09
10
11
12
13
14
16
18
21
• THE G-1TM IS NOT A TOY.
• MISUSE OF THE G-1TM MAY RESULT IN SERIOUS
INJURY OR DEATH.
• EYE PROTECTION DESIGNED FOR PAINTBALL USE
MUST BE WORN BY THE USER AND ANY PERSON
WITHIN RANGE OF THE G-1TM.
• GOG PAINTBALL® RECOMMENDS THAT
THE G-1TM ONLY BE SOLD TO PERSONS 18 AND
OLDER.
• THOROUGHLY READ THE G-1TM OPERATION AND
INSTRUCTION MANUAL BEFORE OPERATING.
• TREAT EVERY PAINTBALL MARKER AS IF IT WERE
LOADED.
• NEVER LOOK DOWN THE BARREL OF A PAINTBALL
MARKER.
• KEEP YOUR FINGER OFF THE TRIGGER UNTIL
READY TO SHOOT. NEVER POINT THE G-1TM AT
ANYTHING YOU DON’T INTEND TO SHOOT.
• KEEP THE G-1TM ON SAFE (POWER OFF) UNTIL
READY TO SHOOT (SEE QUICK START).
• KEEP THE BARREL BLOCKING DEVICE ON THE
G-1TM’S MUZZLE WHEN NOT SHOOTING (SEE
BARREL BLOCKER SECTION).
• ALWAYS REMOVE PAINTBALLS AND DE-GAS THE
G-1TM BEFORE DISASSEMBLY (SEE DEGASSING
SECTION).
• STORE AND TRANSPORT THE G-1TM UNLOADED
AND DEGASSED IN A SECURE PLACE.
• FOLLOW ALL MANUFACTURER’S WARNINGS
AND INSTRUCTIONS FOR PROPELLANT SOURCE
HANDLING, STORAGE AND FILLING.
• DO NOT SHOOT FRAGILE OBJECTS SUCH AS
WINDOWS.
• ALWAYS MEASURE THE VELOCITY OF PAINTBALLS
FIRED BY THE G-1TM BEFORE USE, AND NEVER
ADJUST TO FIRE ABOVE 300FPS (91.44M/S).
TABLE OF CONTENTS
01

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The G-1TM has been designed with simplicity
in mind so that you can concentrate on your
game instead of your marker. It has only one
major moving part in its valve system, with
a minimal number of seals. This DOES NOT
mean that you should neglect your G-1TM. If
you take care of it off the eld, your G-1TM
will take care of you on the eld. For best
performance, clean and grease your G-1TM
frequently. Many players disassemble and
clean their G-1TM after every day of use.
While this may seem a bit extreme, being
vigilant in the upkeep of your G-1TM will
extend its useful life considerably, and
catch any problems when there is time to
correct them before the next game. Playing
in the rain will not damage your G-1TM. In
fact, the G-1TM. has been tested and proven
to function underwater. However, long-
term exposure to moisture can cause rust
damage to some of the G-1TM’s screws, so
if your G-1TM should become waterlogged,
remove the barrel, stock and rubber grips
and allow it to dry out, then follow the
disassembly instructions for full cleaning.
Clean out mud and paint with a damp cloth
and alcohol. Lubricate the G-1TM ONLY with
GR33SETM pneumatic grease. Use fresh,
high quality paintballs for best performance.
REQUIRED ITEMS FOR MAINTENANCE
STATISTICS MAINTENANCE
WEIGHT:
OPERATING PRESSURE:
POWER SOURCE:
PROPELLANT:
RATE OF FIRE:
OPERATION:
MODES OF FIRE:
ANTI CHOP SYSTEM:
BARREL THREAD:
LUBRICANT:
2.7 lbs. (Not Incl. Stock)
160 psi
9-volt Alkaline Battery
CO2 or Nitrogen/Compressed air
11 bps
Low pressure electropneumatic
Semi-Automatic, Billy-BallTM, PSP and Select Fire
Low-Force bolt
GOG®
For proper and consistent operation, the G-1TM should only
be lubricated with GR33SETM lubricating grease.
GETTING FAMILIAR PLEASE READ CAREFULLY
02
REQUIRED ITEMS FOR USE
• 5/32-inch Allen Wrench (included) - Velocity Adjustment
• Chronograph (provided for use at commercial paintball
eld) - Velocity Adjustment
• Barrel Blocker (included)
• CO2 or HPA tank (purchase seperately)
• ASTM Compliant Paintball Goggles with Mask
(purchase seperately)
• 68 Caliber Paintballs
• Paintball Hopper/Loader (purchase seperately)
• 9-Volt Alkaline Battery
• 5/64-inch Allen Wrench (included) - Battery Change
• 7/64-inch Allen Wrench (included)- Clamping Feedneck
• 1/8-inch Allen Wrench (included) - Stock/Backplate,
Trigger Adjustment, ASA, Grip, Breech and Circuit
Board Screws
• 5/32-inch Allen Wrench (included) - Velocity Adjust-
ment
• 5/16-inch Allen Wrench (included) - Bolt Sleeve
• Snap-Ring Pliers (purchase seperately) - Regulator
Disassembly (Advanced Maintenance)
• GR33SE
TM
(purchase seperately) - Paintball Marker
Lubricant

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FIG. 1
FIG. 2
BARREL BLOCKER IN USE
USE HIGH PERFORMANCE LOADER
The Barrel Blocking Device is a critical piece of paintball safety equipment - nearly as important as
paintball goggles. The Barrel Blocker serves to protect against accidental discharge of a paintball by
catching it before it can cause harm. A Barrel Blocker is included with the G-1TM and must be used every
time it is handled in an area where people or property are not properly protected by paintball goggles
or paintball eld netting. To use the Barrel Blocker simply slip it over the end of the barrel and stretch
its cord back over the back of the G-1TM or the rearmost part over which it can be securely looped. Use
the strap’s adjuster to cinch the strap tight, so that the Barrel Blocker can provide protection against
accidental discharge of a paintball.
The Barrel Blocker should only be removed when the G-1TM is on a “live” paintball eld and all persons
involved are wearing proper paintball protection.
The G-1TM is a high performance tournament grade paintball marker. Its low-force bolt will often
prevent paintballs from being chopped if the hopper is not able to load paintballs as fast as the G-1TM is
being red. If you want to realize the G-1TM’s maximum repower potential, especially if it is upgraded
with a circuit board that utilizes an anti-chop eye for higher rates of re, you will need to use a high
performance loader. High performance loaders, especially those which provide force-feeding, will yield
the best results with the G-1TM.
The G-1TM is equipped with a clamping feedneck that allows it to adapt to the small size differences
in hopper neck sizes, yet lock or release quickly. Using a 7/64-inch allen wrench, loosen the clamping
feedneck before installing a hopper. If the hopper is a tight t, a at bladed screwdriver may be used to
further spread the gap in the feedneck clamp, provided the clamp screw has been loosened enough.
The G-1TM may also be congured so that the hopper is located to the right, left, or directly above the
center of the marker. See the Advanced Maintenance Section of this manual for instructions to change
or reposition the feedneck.
BARREL BLOCKER
HOPPER
BARREL BLOCKER/HOPPER PLEASE READ CAREFULLY
03

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NEVER PUT OIL IN A COMPRESSED AIR REGULATOR OR
TANK - ONLY APPLY MANUFACTURER RECOMMENDED
LUBRICANTS.
GASES
The G-1TM is a low-pressure paintgun. It operates at approximately 160 psi, which means it is capable of
functioning well with either high-pressure compressed air or CO2as a power source. Proper set up of your
gas system will help you obtain the best possible performance from your G-1TM.
Whether using compressed air or CO2it is important that the G-1TM is not exposed to sudden “pops” of
pressure. Always turn-on or screw-in a compressed air system or CO2slowly, so that the valve opens
slowly, and the gas pressure inside the marker is raised smoothly. Be gentle to the internals of your G-1TM
and they will reward you with a long service life.
High Pressure Air systems (HPA) are the preferred power source used in paintball as they are unaffected
by temperature uctuations and do not have the potential for liquid problems. HPA systems consist of
a tank and a regulator, and are typically rated to store air or nitrogen at pressures of 3,000 or 4,500 psi.
Although pure nitrogen is almost never used in paintball, many players call compressed air “nitro” as air
is made up of more than 70% nitrogen, allowing the two gasses to be used interchangeably in paintball
equipment.
The G-1TM is congured for use with screw-in style HPA systems. Although HPA systems pre-set to deliver
approximatly 400 psi (low output) will work with the G-1TM, 800 psi (high output) systems are preferred, to
reduce the risk of gas starvation under rapid re.
Never use oil or any petroleum based cleaner or lubricant in a compressed air regulator or tank. Exposure to
pressurized air increases oil’s ammability and can cause a serious safety hazard. Only use manufacturer
recommended lubricants with compressed air systems, and follow the manufacturer’s maintenance and
operation instructions explicitly.
If you are using your G-1TM with an adjustable output compressed air system, it should be set to deliver
about 800 psi. The G-1TM’s vertical regulator can accommodate a wide range of input pressures, so exact
adjustment of the air system is not critical.
FIG. 3 HPA TANK BEING FILLED
GASES
NOTICE
Due to shipping restrictions, CO2 and HPA tanks are sold empty. They must be lled before they can be
used. Most paintball shops and elds are equipped to ll HPA tanks. Paintball shops, elds, many hardware
stores and sporting goods stores will have the equipment and trained personnel to ll paintball CO2tanks.
The G-1TM is factory congured for use with CO2. Its
dwell setting must be changed to obtain optimum
performance with HPA. See the Firing Modes /
Dwell section of this manual to learn how.
NOTICE
04
Although the G-1TM can be powered by
compressed air, typical home, garage or industrial
air compressors can not provide the high pressures
required to ll a paintball HPA tank. Paintball HPA
systems can be relled by paintball elds and
stores which use higher pressure compressors
similar to those used in the SCUBA and reghting
industries.
NOTICE

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CO2is usually not recommended for electronic paintball markers. This is not the case, however with
the G-1TM. As long as it is set up properly, the G-1TM can function extremely well with CO2as a power
source. In fact, because of its extremely low operating pressure, the G-1TM has been shown to operate
on CO2 continuously under heavy re conditions where older design blowback mechanical markers
fail. The use of CO2will not damage the seals in the G-1TM, freeze or cause damage to its circuit board.
The important thing to remember if using CO2is that best performance can be achieved when only
gasseous CO2is fed to the G-1TM, and liquid CO2remains in the tank.
Although the relief valve integrated into the G-1TM’s vertical regulator provides the marker with protection
from pressure spikes, those pressure uctuations can cause poor performance, and temporary blockage
of the G-1TM’s solenoid valve.
The bottom-line ASA tting on the G-1TM places the CO2tank at an angle. When the marker is held
in typical ring positions, gravity will keep the liquid CO2away from the tank valve, preventing it from
feeding into the marker.
Alternative CO2arrangements include placing the CO2tank vertically in a pack, and using a paintball
CO2remote hose to feed CO2to the G-1TM. This arrangement not only prevents liquid CO2 from entering
the marker, but also makes the marker assembly lighter weight.
Anti-siphon CO2 tanks contain a J-shaped tube that draws gaseous CO2from the top of the tank
when it is in a horizontal position. Anti-siphon tubes must be professionally installed, to ensure that
critical safety checks are performed during valve installation. If using an anti-siphon tank, the G-1TM’s
stock bottom-line ASA tting should be replaced with an ASA that will place the tank completely hori-
zontal. Anti-siphon CO2tanks should not be used with remote hoses.
The bottom-line ASA tting on the G-1TM can be removed by unscrewing the two industry-standard
10-32 mount screws holding it to the grip frame. If replacing the ASA, be sure the model chosen
takes into account the type of gas system being used (horizontal for anti-siphon CO2tanks, angled for
standard tanks).
GASES PLEASE READ CAREFULLY
FIG. 4
FIG. 5
ANGLED CO2[CUTAWAY VIEW]
CO2 WITH ANTI-SIPHON [CUTAWAY VIEW]
CO2 may also be congured with a remote
hose with-out Anti-Siphon. [Not Shown]
IMPORTANT
USING CO2
BOTTOM-LINE ASA
05

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OVER TIME BATTERIES MAY LEAK. ALWAYS REMOVE THE
BATTERY FROM THE G-1TM WHEN STORING FOR FOR MORE
THAN A MONTH.
BATTERY
The G-1TM is powered by a standard 9-volt alkaline battery. Lower cost “heavy duty” batteries will not
consistently deliver the amperage needed to operate the G-1TM. Erratic performance, especially drops in
velocity or skipped shots during rapid re can result from a battery that is not delivering full power.
The G-1TM is also compatible with 9-volt rechargeable batteries. Because specications of batteries vary
widely from brand to brand, use of any rechargeable battery will require testing to determine if it can
power the G-1TM reliably. Some NiCD “9v” rechargable batteries actually operate at 7.2 volts. These types
of batteries will not work well with the G-1TM.
Any time the G-1TM exhibits erratic performance, drops velocity or skips shots while rapid ring, does not
shoot or does not turn on, the rst step in troubleshooting should always be to replace the battery with a
brand-new, name-brand alkaline battery.
To replace the G-1TM battery, use a 5/64-inch allen wrench to remove the two screws from the left side
of the rubber grip, then open the grip. Remove the old battery, taking care not to bend, kink or strain its
wires. Unsnap the battery from its connector by pulling on the connector, not the wires. Snap in a fresh
battery, then place that in the grip frame, tucking the wires into place, before closing and re-securing the
grip.
FIG. 6
BATTERY
ALKALINE BATTERY
06

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Even the best quality paintballs will vary in size from one batch to the next and as weather conditions
change. While your G-1TM will work well even with a poor paint to barrel t, optimal performance will
be achieved with a proper t.
The ideal t between the paintball and the barrel is when the ball is inserted in the bore (the end that
screws into the G-1TM) and does not slip or roll through to the muzzle (the business end) on its own.
The ball should sit in place, even when the barrel is pointed straight down. If the paintball can roll out
on its own, the t is too loose. The ball should be able to be expelled from the barrel by blowing it out,
like a blowgun, using a minimal amount of breath. If the ball is difcult to blow through, the t is too
tight, which can lead to ball breakage.
The velocity, or speed at which a paintball is red from the G-1TM, must be measured and adjusted to
below the paintball eld’s velocity limit immediately before each day of play (for player safety). If CO2
is used, velocity should be checked and adjusted multiple times during the day. In an area where it is
safe to re paintballs, while wearing ASTM compliant eye and face protection for paintball, re three or
four shots over a chronograph to measure the velocity at which the paint is being red.
If velocity adjustment is necessary, Use a 5/32-inch allen wrench on the adjuster in the bottom of the
vertical regulator, turn clockwise to increase the velocity/pressure, and counter-clockwise to decrease.
Take three or four shots after every adjustment to allow the gas pressure inside the G-1TM to stabilize.
Adjust until the marker is ring consistently within the limits for the eld where you are playing. For
safety reasons, never adjust the G-1TM to re at greater than 300 feet per second (91.44 meters per
second).
VELOCITY ADJUSTMENT
FIG. 7
PAINT/VELOCITY
PAINT
VELOCITY
NEVER ADJUST THE G-1TM TO FIRE ABOVE 300
FEET PER SECOND, AS SERIOUS INJURY MAY
RESULT.
07

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The length of the G-1TM trigger pull is adjustable with a 1/8-inch allen wrench. The trigger adjustment
screw is located at the bottom of the trigger guard where it meets the grip frame. It may be helpful to
remove the marker’s rubber grips to provide easier access when making adjustments.
Turning this screw clockwise decreases how far forward the trigger can move, while turning
counterclockwise increases it. If the trigger is not adjusted to swing far enough forward, the
microswitch inside the G-1TM will not be able to reset, resulting in the marker not ring.
Always check the trigger after making adjustments. Be sure that the trigger switch clicks when the
trigger is pulled, and again when it is released. Also make sure that when the trigger is pulled it is
being stopped by the rear trigger limit screw, not by pressing up against the microswitch inside the
marker.
TRIGGER ADJUSTMENT
FIG. 8 TRIGGER ADJUSTMENT
08