SHS M4 FIRE LEVER - BLACK (M4-58-BK)

SHS is a company that manufactures airsoft equipment and accessories. The SHS M4 fire lever you mentioned probably means a fire lever made for an M4 airsoft gun.

The fire lever, also known as the selector, is a lever on the side of the weapon that allows the player to select the desired firing mode. M4 airsoft guns have three positions:

1. Secured: The fire lever is in the Safe position, and in this position the weapon cannot fire.

2. Single Shot: When the fire lever is placed in the "semi" or "semi-auto" position, the weapon fires one shot for each trigger pull.

3. Continuous Fire (Full-Auto): When the fire lever is set to "auto" or "full-auto", the weapon will fire continuously as long as the fire button is held down.