The Bob Long 4-Stage Expansion Chamber effectively converts liquid CO2 into gas. Liquid CO2 is drawn thru the bottom chamber and travels through a series of chambers where the liquid and air are mixed evenly, giving a more consistent flow of pressure to the valving of the marker. Works in any position. Screws into any vertical ASA and attaches to standard 1/8in NPT hose. Anodized aluminum. Blue.

Product ID: XP5035A-4U