so you can adjust the pressure per square inch to change the velocity of the BBs coming out

Weight: 1877

Receiver Plastic Rail CNC Hard-Anodizing Overall Length 875mm Weight 5

Package Includes: Tracer Unit

PTS UNITY TACTICAL FAST OPTIC RISER - DUPONT POLYMER Style:FDE so you can adjust theUnity Tactical FAST is a series of optic mounts that provide end users with a 2. 26" centerline optic height. This optic height more rapid visual processing of the battlefield by ensuring an ergonomically correct heads up posture. Further, they provide faster and easier dot reticle acquisition while wearing night vision goggles, protective masks, plate carriers and other gear. The FAST Riser securely elevates block type red dot optics with a standard