BT 4 Combat User Manual
BT-COVER-BLK.qxd 7/11/05 10:08 AM Page 2
BT Paintball Designs, Inc.
Model BT-4
TM
No part of this document may be copied or reproduced without the prior written
consent of BT Paintball Designs, Inc.
Congratulations on your selection of the BT-4
TM
paintball marker. The BT-4TMis
made to provide you with many years of reliable performance. BT Paintball
Designs, Inc. is honored that you have chosen the BT-4TMas your marker of
choice and hope you enjoy using this high quality product.
BT-4
TM
Specifications
Model.................................................................................................................BT-4
Caliber................................................................................................................. .68
Action....................................................................................................Semi-Automatic
Powered.............................................................CO2 or Compressed Air (HP Output)
Cycle Rate.............................................................................................................13BPS
Main Body Material............................................................................................Aluminum
Accuracy Range.......................................................................................................150+ft
The BT-4TMcomes with a removable barrel system. This feature allows the user
to select a barrel that is most suitable for the playing conditions. Standard barrels are mirror-honed with a step-bore and porting and stock length is 8 inches.
2.
READ OWNER’S MANUAL BEFORE USING.
Rules of Safe Marker Handling
1. Treat every marker as if it were loaded.
2. Never look down the barrel of a paintball marker.
3. Keep your finger off the trigger until ready to shoot.
4. Never point the marker at anything you don’t wish to shoot.
5. Keep the marker on “safe” until ready to shoot.
6. Keep the barrel blocking device in/ on the marker’s muzzle when not shooting.
7. Always remove paintballs and propellant source before disassembly.
8. After removing propellant source, point marker in safe direction and discharge
until marker is degassed.
9. Store the marker unloaded and degassed in a secure place.
10. Follow warnings listed on propellant source for handling and storage.
11. Do not shoot at fragile objects such as windows.
12. Every person within range must wear eye, face and ear protection designed
specifically to stop paintballs and meeting ASTM standard F1776.
13. Always measure your marker’s velocity before playing paintball and never
shoot at velocities in excess of 91.44 meters (300 feet per second).
1.
Velocity Adjustment
1. Always check the velocity of the marker
prior to playing paintball. Different playing
fields may have different maximum velocity limits. At no time should you shoot at
velocities above 300 feet per second.
2. Put on an eye protective device designed
specifically for paintball and make sure
that anyone within range of the BT-4™
does the same.
3. While pointing the marker in a safe direction, remove the barrel blocking device.
4. Point the BT-4™ over a chronograph that
will measure the velocity of the paintballs
discharged by the marker.
5. Set the trigger safety to “fire” (red mark
will show).
6. Pull the trigger and check the reading on
the chronograph.
7. Locate the velocity adjuster screw on the
center of BT-4™, under the name plate.
8. Using a 5/32" hex key, turn the screw
inward or clockwise to reduce the velocity,
and outward or counterclockwise to
increase the velocity of the paintballs
discharged from the marker.
NOTE: Eye protective devices designed specifically for paintball
use must be worn by the operator and anyone within range.
Read this entire manual before loading, attaching a propellant source or in any way
attempting to operate the BT-4
TM
.
Air Cylinder Installation
Loader Installation
1. To install loader check the Slide Away™ Elbow
and loader to make sure they are free from
debris and obstructions.
2. Position Slide Away™ Elbow
3. Using a 3/16" hex wrench, loosen the clamping
screw on the Slide Away™ Elbow to allow the
loader to slide into the top of the elbow.
4. Press the loader into the opening of the Slide
Away™ Elbow until it stops.
5. Align the loader so that the lid is pointing to the
rear and the loader is parallel with the marker.
6. Using a 3/16” hex wrench, tighten the clamping
screw on the Slide Away Elbow™ until snug.
DO NOT over-tighten.
Barrel Installation
1. Make sure marker is degassed, hopper
removed, no paintballs in the feed port or
breech and the safety is set to “safe”.
2. While pointing marker in a safe direction, place
the threaded end of the barrel into the front
opening of the marker body.
3. Turn the barrel clockwise until it stops (do not
over tighten).
4. Adjust the barrel accessories if necessary.
5. Install a barrel blocking device. This can be a
barrel plug or other such device that prevents
the accidental discharge of a paintball.
Air Cylinder Installation
1. Make sure the barrel blocking device is
properly installed and the marker safety is set
to “safe” (red marking on safety will NOT be
visible).
2. While pointing the marker in a safe direction,
cock the marker by pulling the cocking knob
located on the left side of the marker back until
it clicks and stops.
3. Release the cocking knob.
4. The marker is now cocked.
5. Locate the air cylinder adapter. The BT-4™
cylinder adapter is located at the base of the
pistol grip.
6. Position the BT-4™ so that the air cylinder adapter is pointed upwards while keeping the
muzzle of the marker pointed in a safe direction.
7. Insert the threaded cylinder valve end into the adapter.
8. Without pushing the cylinder, twist the cylinder clockwise and allow the threads to draw the
cylinder into the marker until it stops. Your marker is now charged.
DO NOT REMOVE THE VELOCITY
ADJUSTMENT SCREW.
Loading Paintballs
1. Put on an eye protective device designed
specifically for paintball and make sure that
anyone within range of the marker does the
same.
2. Load quality .68 caliber paintballs (leave some
room for paintballs to move about, inside
loader).
SAFETY OFF
SAFETY ON
4.3.
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