Gas Ram

The Gas-Ram (or gas piston, gas strut) is an internal propulsion mechanism that replaces the traditional metal spring in spring-piston airguns. It is placed inside the cylinder and consists of a sealed piston with compressed gas (usually nitrogen or inert gas). When you cock the pistol, the piston is compressed; when you fire, the gas expands and pushes the piston to propel the pellet.

Its advantages are:

• Longer lifespan compared to some conventional springs
• Lower noise and smoother operation
• Reduced recoil
• Immediately ready at low temperatures
• More linear behavior during cocking/firing, easier cocking in some guns.
• Less maintenance required compared to broken/damaged springs.

Single Function

It means that the trigger performs only one action: it releases the hammer to fall and fire. The trigger does not cock the hammer by itself.

- Trigger feel: Usually light and with a shorter travel compared to Double Action.

- Accuracy: The lighter and crisper character reduces loss of aim when pulling the trigger. For this reason, it is a common choice for competition/target pistols and for shooters who prefer fine control.

- Speed: Although the SA trigger is quick to pull, it requires time/movement to cock before each shot.

- Safety: The light trigger can be more sensitive to accidental discharge if not handled properly. It is often combined with other safety mechanisms.

BBs

BBs are spherical projectiles, usually small balls used in airsoft pistols/rifles (6 mm) and in certain BB-gun type airguns (.177 / 4.5 mm).