Use the #untrap command on the trigger plate. This will only disable the trigger mechanism. The trap will reset itself after a certain number of turns (500 − rand(500)) (if the ammunition depot is not disarmed), or if a new ammunition depot is linked to it.

To permanently disable the trap and secure its ammunition, you must locate and disarm the ammunition depot, which is located elsewhere on the same dungeon level(in a wall). Successfully untrapping the depot will yield a large supply of projectiles. Simply triggering the trap repeatedly will eventually deplete the depot, but this is dangerous and yields fewer projectiles on average.

The projectiles are embedded in the walls. After the first trigger OR if the player applied clairvoyance, the location of all the projectiles are revealed to the player, but they cannot be obtained by kicking(or any similar method). Digging at the wall via pick-axe would work. Otherwise, the player would need to disarm the trap in the wall(by pressing u and then a direction), in which case the weapons would still be triggered if disarming fails.