ACI Mayhem User Manual
MAYHEM
OWNERS MANUAL
Manufactured by
Paintball Guns International
MAYHEM
Table of Contents
Specifications . . . . . . . . . . . . . . . . . . . . . . 2
Parts diagram and Listing . . . . . . . . . . . . . 3
Description of Marker Operation. . . . . . . 4
Getting Started . . . . . . . . . . . . . . . . . . . . . 5
Changing Angle of Drop Tube . . . . . . . . . . 6
Bolt and Poppet Removal . . . . . . . . . . . . . 7
Cleaning and Maintenance . . . . . . . . . . . . 8
Ball Detents . . . . . . . . . . . . . . . . . . . . . . . 9
Warranty . . . . . . . . . . . . . . . . . . . . . . . . 10
IMPORTANT: Read through this
manual before operating your paintball
marker. Read all directions before
proceeding to make any repairs of
modifications to this marker.
SAFETY
• Read the entire manual before using the Mayhem.
• The Mayhem is not a toy. It can cause serious injury or death.
• Wear approv ed e ye and head protection,even when test firing.
• The compressed air source used with the Mayhem can cause serious injury or death.
• Sale or use of the Mayhem is not intended for individuals under the age of 18.
• The Mayhem is to be used only as described in this manual.
• Fire only 0.68 caliber paintballs from the Mayhem.
• Check the velocity of your Mayhem before each use. Not to exceed 300 fps.
• The Mayhem can fire when dropped.
• Keep the Mayhem unloaded and unpressurized when not in use.
• Install a barrel plug in the barrel when not in use. (One is included.)
• Replacement barrel plugs are available from your PGI dealer .
• Handle the Mayhem as if it is always ready to fire. It recocks during firing.
• The Mayhem can be dangerous up to 200 yards (180 meters).
• Don’t shoot at opponents closer than 20 feet.
• Never shoot toward indi viduals not wearing approv ed eye and head protection.
• Never disassemble the Mayhem while it is pressurized.
• Do not touch a chilled CO
2 container with bare skin; frostbite can occur.
• Do not use the Mayhem while under the influence of drugs or alcohol.
• Never shoot at the property of others.
• Learn and follow the rules of the field where you are playing.
• Always maintain control of the Mayhem while it is pressurized.
• Never store the Mayhem while it is pressurized.
• Do not modify your gun, especially your trigger assembly.
Caliber
◗ 0.68 Paintballs only
Closed Bolt Semi-Automatic Powered By
◗ Compressed CO2
◗ Regulated Compressed Air
◗ Regulated Nitrogen
Weight
◗ 3.0 lbs. (not including loader or air source)
Ball Feed
◗ Can be located in any of the three positions
◗ 7/8 inch O.D. accepts standard feed loader adapters
Muzzle Velocity
◗ Under 100 fps to over 300 fps
◗ Adjustable - External Pressure Regulator
Barrel
◗ Aircraft Quality Aluminum
◗ Microhoned and Polished
45 Grip One-Piece Trigger Frame
◗ Ergonomic “Point and Shot” Design
◗ Accepts Standard 45 Grip Pads
◗ Complies with Industry Standard 2 Hole Bottomline
Optional accessories
◗ Expansion Chamber
◗ Rechargeable 9 Volt Battery and Charge
2
Mayhem Specifications
3
Barrel ..............................................1
Breech.............................................2
Ball Detent and Spring ....................3
Cylinder ..........................................4
Drop Tube ......................................5
Top Mounting Screw.......................6
Site Rail...........................................7
Mainspring ......................................8
Bolt.................................................9
Poppet.............................................10
Valve Housing.................................11
Valve Housing Cap..........................12
Valve Housing Cap Screws ..............13
Solenoid ..........................................14
Cover and cover screws ...................15
Spool Valve......................................16
Adapter Plate...................................17
Bottom Mounting Screws................18
Large Mounting Screws...................19
Pressure Regulator...........................20
Hose ...............................................21
Grip ................................................22
Grip Mounting Screws.....................23
Grip Frame......................................24
Parts Diagram Listing
22
23
1
8
9
2
3
5
6
7
4
11
11
14
12
13
21
10
17
19
24
20
18
16
15