Matrix Gear RD600 Low Profile Micro Red Dot Tech Mats It means what you are

It means what you are seeing is really where you think it is

Tippmann Response Trigger (Installed)

for example the Proflex

but also has an intelligent motion sensor that turns the tracer unit on after 3 BB's fired

The small angled fins around the skirt of the FSR help induce that spin as the round flies through the air

Matrix Gear RD600 Low Profile Micro Red Dot Tech Mats It means what you areFeatures Aluminum alloy housing Coated anti glare lens East to use ON OFF switch Fits all standard 20mm accessory rails Length: 50mm Magnification: 1x Tube Diameter: 25mm Battery: 1x CR2032 Material: Aluminum Alloy Package Includes: Optic, Cleaning Cloth, Screw Driver, Allen key