An airsoft shotgun,, the Jag Arms Scatttergun gets modded for it to use HPA as power source. The Real Deal Airsoft shows how it is done... "How to HPA Tap an #airsoft​ shotgun. This mod only works with the Green Gas Scattergun by jag arms.

You will see step by step what is required to convert your gas shotgun to hpa shotgun.

Benefits of HPA are:

• Variable FPS
• No cool down effect
• Fast Rate Of Fire
• Consistency
• Fun
• Clappage

Parts used are Tapp Airsoft shotgun to M4 mag adapter & CQB russian HPA valve."