Airsoft Sound Grenade – Gas

Safety Warnings

• Always treat the grenade as if it is armed and dangerous.
• This device can produce sound in excess of 110 dB (measured at 30cm). It is loud, especially if used indoors. Avoid detonations within immediate proximity to your and other players’ ears.
• Always wear proper ear protection, and ensure consenting players in your game are also wearing proper ear protection.
• Always wear proper eye protection, and ensure consenting players in your game are also wearing proper eye protection. The burst disks break during detonation and can harm unprotected eyes.
• Do not throw directly at another player to avoid impact injury.
• While pressurized, do not store the grenade in environments above 50C/122F.
• Do not modify the grenade in any way. Such modifications can impact the structural integrity.
• Do not attempt to disassemble the grenade while it contains airsoft gas. Always make sure the grenade is empty before disassembling.
• Only fill the grenade with an approved airsoft gas. Do not use gases which are not intended for airsoft.

Resetting and Loading

1. Push the plunger down with your finger.
2. When the plunger is at the bottom, slide the button safety over the top of the plunger.
3. Use an approved airsoft gas to fill the grenade through the inlet valve.

• While loading, the grenade should be in the upright position with the inlet valve facing up. This way the gas bottle should be pointing down while filling.
• Reference the gas recommendation chart to know what gas (green/red/black) you should use for your current ambient temperature condition.

4. Unscrew the burst cap lid CCW (Left=Loose). Place a burst cap inside and screw the burst cap lid back on CW (Right=Tight). Firmly hand-tighten the lid.

Deploying

1. Push the button to the center of the grenade until the plunger is completely uncovered. The gas pressure inside the grenade will pop-out the plunger.

• Note: Once armed, the grenade cannot be put back into safe until detonated.

2. Throw it! The grenade will detonate on impact.

Maintenance

To ensure smooth action of the button safety:

1. Ensure the gas reservoir is empty by pushing the safety button into the armed position and hitting the grenade on a hard surface to release any pressurized gas that may still be inside.
2. Put the grenade into the reset position by pushing the plunger down with your finger and then sliding the safety button on top of it.
3. Use an M2.5 hex head to unscrew the 2 bolts at the top of the grenade head. Remove the head and safety button.

• Be careful of the 2 springs which may pop out when removing the grenade head and safety button from the grenade main body. These springs are located in between the safety button and grenade head, and help to reset the safety button when the plunger is reset.

4. Use a paper towel to remove any dirt or residue on the grenade parts.
5. Once clean, apply a small amount of thick oil to the interface between the safety button and grenade head. Slide the safety button back-and-forth in the grenade head to distribute the lubricant.
6. To reassemble, first re-insert the 2 springs in between the safety button and grenade head. Align the safety button so it is in the grenade head’s track.
7. Align the grenade head and safety button subassembly with the grenade’s main body. It may be easiest to do this by holding the grenade main body upside-down. The parts should sit flush together.
8. Re-insert the 2 bolts and tighten them down. The connection should be firm, but do not overtighten it to avoid breaking the grenade head.

To lubricate the seals and ensure proper sealing:

1. Ensure the gas reservoir is empty by pushing the safety button into the armed position and hitting the grenade on a hard surface to release any pressurized gas that may still be inside.
2. Unscrew the lower grenade body from the main grenade body CCW (Left=Loose). This connection is in tension because it is pushing on the main body seal, so it may be tight/difficult to unscrew.
3. Remove the ball and conical spring, and set aside.
4. Push the safety button into the armed position (unblocking the plunger). Push the plunger further into the grenade main body. Use a long tool like a screwdriver or pen to help continue pushing the plunger (from the valve side) out of the grenade main body. The plunger should pop-out and become completely separated from the grenade main body chamber.
5. Inside the grenade main body there is a green cup seal (not the larger green seal that is attached to the grenade lower body). Use a tool like a screwdriver or L-wrench to push out the seal (in the same direction as the plunger removal). It is only held inside with friction, so it should be easy to remove once dislodged. Avoid using a sharp tool so the seal does not get scratched.
6. Use a paper towel to remove any dirt or residue on the grenade parts.
7. Once clean, apply a drop of thick silicon oil on the middle of the plunger shaft, and another drop of thick silicon oil on the opposite side of the plunger shaft (2 drops total). To distribute the lubricant on the plunger, insert the plunger through the green cup seal and move the cup seal back-and-forth while rotating the seal. Leave the green cup seal on the plunger for reassembly. Set aside.
8. Apply a drop of thick silicon to the large green seal in the grenade lower body. Spread the lubricant with your finger to cover the surface of this seal. Pay attention to make sure you cover the seal interface, shown by the circular indentation close to the outer circumference of the seal.

• Note: If the seal is worn-out or damaged, the seal can be removed and flipped for a like-new performance (use a blunt tool to lift from the center hole). If both sides are damaged then it is time to replace the seal.

9. Put the plunger and green cup seal sub-assembly inside the grenade main body. Align the plunger with the hole in the top of the grenade main body, and push the plunger through the hole. Fully insert the plunger as much as possible in order to push the green cup seal back to the top of the grenade main body. Keep the plunger fully inserted for the rest of the assembly.
10. Drop the ball into the main chamber body. It will align with the cup shape in the plunger. Place the conical spring inside the grenade main body with the smaller side facing the ball. The larger side of the spring will contact the large green seal. Put the grenade lower body subassembly onto the grenade, slightly compressing the conical spring. Firmly hand-tighten the grenade lower body back onto the grenade main body.

Storage

• To ensure long-term health of the seals:
  -> Store in a location between -10 to 50 C (14 to 122 F).
  -> Store in a dry area away from excess moisture.

• The grenade can be stored with or without airsoft gas inside. If stored with gas, ensure it is an approved airsoft gas with lubricant. Long term exposure to a pressurized lubricant-free gas (like store-bought propane) can draw out the moisture in the seals and lead to seal cracking and then leaks.

Troubleshooting

• The grenade is detonating immediately when I press the safety button.
  -> There is not enough pressure inside the grenade to hold the ball onto the seal. Try a higher pressure gas. Please refer to the gas recommendation table.
• The grenade is detonating when I attempt to throw it.
  -> There is not enough pressure inside the grenade to hold the ball onto the seal. Try a higher pressure gas. Please refer to the gas recommendation table.
• The grenade is not detonating on impact, sometimes or every time. Some gas is released, but not all of it.
  -> There is too much pressure inside the grenade. Try a lower pressure gas. Please refer to the gas recommendation table.
• I am using the correct gas, but sometimes the grenade still does not detonate.
  -> The ball spring is worn out, meaning it is no longer strong enough to keep the ball away from the hole after impact, so the ball is re-sealing the hole. Replace the ball spring.
  -> It is possible your gas bottle is low, preventing sufficient gas from being loaded inside the grenade. Try a new gas bottle.
• When charged, the grenade is leaking from the gas exit hole.
  -> There may be some debris between the ball and the seal, or on the seal where it is compressed between the two grenade halves. Disassemble the grenade and clean the seal and sealing interfaces.
  -> If the seal is clean and still leaking, the sealing surface may be damaged. The included seal is double-sided, so you can remove the seal and flip it for a like-new sealing surface. If both sides have been damaged, replace the sealing pad.
• When charged, the grenade is leaking from the stem/plunger hole.
  -> There may be some debris between the stem seal and the stem. Disassemble the grenade and clean the seal and the sealing interface on the shaft of the stem.
  -> It is possible the seal is damaged. Lubricate it and try again. If it still leaks, replace the seal.