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 info@armalite.
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 to service the kit.
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.
D. Pinch the front retainers of the Mk19's 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 the cartridges before moving to the next step. A.
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 the desired length.
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 contains a training device.
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.
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 charger handles palms down. 1. Press the charger handle locks in. 2.
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 charger handles palms down. 1. Press the charger handle locks in. 2.
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 Mk19 Machine Gun A.
CAUTION: REPEATED DRY FIRING OF THE Mk19 WILL CAUSE UNNECESSARY WEAR TO THE BOLT. F. Place the safe-fire switch to show “F,” confirming that the weapon is ready to fire. G. Ease the bolt forward. 1. Hold one charging handle FIRMLY to the rear. 2. Press the trigger to release the bolt and ease the bolt forward under firm control. Don’t let it slam forward. 3. Ensure that both charging handles are in the forward and up position. H. Place the safe-fire switch to show ‘S” (safe). I.
CHAPTER 3 Maintenance Instructions Removing the AR-22 from the Mk19 A. Ensure the safe-fire switch shows “S”, confirming that the weapon is on safe. B. Pinch the front retainers of the Mk19's feed chute and swing the front outward. Remove the round discriminator (the red piece attached to the yoke with a cable D. Unscrew the AR-22 barrel insert from the yoke. CAUTION: The barrel insert may be hot! E. Remove the red AR-22 yoke from the flash suppresser.
F. In cool weather, water from propellant gasses may condense on the insert or Mk19 barrel . Wipe them clean and dry, then oil them to prevent damage to either. Cleaning. A. Use a rag dampened in CLP or RBC to wipe the outside of each cartridge case. B. Use a 7.62mm cleaning rod, patch holder, and patch to clean the chamber and barrel of each adapter cartridge. C. Preserve with a light coat of LAW or, if none is available, with CLP. Replacement of links. A.
C. Set the link carefully on the cartridge; it must be driven down without tipping or jamming. D. Use the link positioning tool to press the new link back until it passes the groove at the middle of the adapter cartridge, then use the tool to push it back into the groove. AR-22 Reliability.
A. Clean and dry the cartridges, tools, and the interior of the ammunition can. Place the cartridges and tools in the can. B. Screw the AR-22 barrel insert into the yoke. The yoke will protect the threads of the barrel. C. Secure the barrel insert and yoke in a suitable box for transport.
APPENDIX A AR-22 Test and Training System Parts List Barrel Insert Assembly - 221400 Yoke Assembly - 221500 Front Yoke - 221501 Rear Yoke - 221502 Round Discriminator - 221506 Cartridge Assembly - 229500 Cartridge - 229520 Link, Cartridge - 22960010 Note: Swivel, Cartridge Link is supplied with above Links and swivels may be removed from expended cartridges available at local Ammunition Supply Point Pliers, 8” Slip Joint - 22901003 Blank knock out Punch - 22901002 Bolt Cutters - 22901004 Link Positioner
APPENDIX B Expendable Supplies and Material List CLP Brush, 9mm Patch, cleaning, .
APPENDIX C Corrosion Prevention and Control (CPC) Assure that the ammunition can itself is dry and clean inside before storing cartridges, links, and tools inside it. Make sure that the lid seals are intact. Assure that all adapter cartridges, links, and tools are clean, dry, and lightly oiled with LAW before storing them in the ammunition can.
