ArmaLite AR-22 Manual

 
 
 
 
 
OPERATOR’S MANUAL 
 
AR-22 TEST AND TRAINING SYSTEM    
 
for the 
 
40mm Mk19 GRENADE MACHINE GUN 
 
 
 
 
 
DISTRIBUTION:  Distribution authorized to U.S. Government Agencies and their 
contractors.  Requests for this document will be referred to ArmaLite, P.O. Box 299,  
Geneseo IL 61254 
 
P.O. Box 299 Geneseo IL 61254 Tel 309-944-6939 fax 309-944-6949 
[email protected] 
  

 
 
CHAPTER 1  Introduction 
 
General Information.  The AR-22 Test and Training System (TTS) for the Mk19 
Grenade Machine Gun allows the Mk19 to be fired automatically during exercises, 
before deployment or operations, or after maintenance.  It is powered by standard 
7.62mm M82 blanks. 
 
Description.  The AR-22 consists of a kit that includes a barrel insert, a mounting yoked 
with attached round discriminator, 32 belted adapter cartridges that accept M82 blanks, 
and appropriate hand tools required...

 
CHAPTER 2  Operating Instructions 
 
Perform Function Check: 
 
A.  Ensure the safe-fire switch shows “S”, confirming that the weapon is on safe. 
B.  Clear the Mk19.  Open the top cover assembly and inspect the feed tray, bolt face, 
and chamber.  Make sure that there is no live ammunition in the weapon. 
C.  Index the feed slide assembly to the left, ensuring that the secondary drive lever is 
engaged under the feed slide pin. 
D.  Close and latch the top cover. 
E.  Charge the gun and return the...

                                            
 
 
D.  Pinch the front retainers of the Mk19s feed chute and swing the front outward.  Insert 
the round discriminator (the red piece attached to the yoke with a cable) into the 
mounting point for the front retainers of the feed chute.  The cable may be wound around 
the barrel to remove slack.  
  
 
                                           
 
 
 
Assembly and Loading of AR-22 Cartridge Belts:  
 
NOTE: It’s most efficient to perform each step on all of...

                                            
 
 
 
 
B.  Insert each adapter cartridge base-down in the opening of the link positioning tube.  
Push the adapter cartridge into the link positioning tube to push the cartridge links 
forward until they stop.   
 
                                             
 
 
C.  Use the pliers to snap the cartridges together to build a belt of desired length.  The 
swivel of each link snaps easily into the opening of the neighboring cartridge’s link.  
Build the belt to...

                                           
 
 
 
 
 
 
 
 
 
 
D.  Insert an M82 blank into the chamber of each adapter cartridge until it snaps into 
place and can be pushed no farther.  The adapter cartridges have a spring that engages the 
rim of the blank to hold it in the chamber.  The base of the M82 blank should be almost 
flush with the base of the adapter cartridge. 
 
                                            
 
 
 
E.  The ammunition can is painted blue on the rear to denote that it...

it) resting to the right end of the can.  The female end of the belt (the end without the 
swivel on it) MUST be the first cartridge loaded into the Mk19.  
 
                                             
 
(Note:  One end of the foam tray at the bottom of the ammunition can is higher than the 
other end.  The high end must be placed to the right.  The male end of the belt rests next 
to this high end.  The large panels of foam must be at the sides of the ammunition can.)  
 
If the foam pieces within...

                                            
 
 
E.  Push the round across the first set of holding pawls, ensuring that the round is straight. 
The links must lie flat or the belt won’t close. 
 
F.  Index the feed slide assembly to the left and close the top cover.  The top cover will 
close easily if the adapter cartridges are in the correct position with the links lying flat, 
and the feed slide assembly indexed to the left. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
G.  Charge the weapon by grasping the...

                                            
 
 
  3.  Push the chargers forward and rotate the charger handles up to the operational 
position. 
 
H.  Place the safe-fire switch to show “F” and press the trigger.   
 
NOTE:  The bolt will spring forward and load the first round onto the bolt face. 
NOTE:  The weapon must be cycled two times to fully load a round. 
 
I. Ensure the safe-fire switch shows “S”, confirming that the weapon is on safe. 
 
J. Charge the weapon again, as above, by grasping the...

                                           
 
 
Fire using short bursts appropriate to this weapon.  If excessively long bursts are fired the 
ammunition belt can “surge” and delink, just as when firing live ammunition. 
 
NOTE:  When the Mk19 is mounted on the M3 tripod, ammunition is fed directly from 
the can.  When mounted on a vehicle, attach the ammunition can bracket to the slots on 
the guns cradle and set the ammunition can on the bracket, securing it with the retaining 
pin. 
 
Unloading the...