Combining the ATI manufactured SUB5 and the HPA expertise of Amped Airsoft, to offer unparalleled performance, durability, and style for competitive airsoft players. For this bit, we wont include the base pistol in the list since you likely already have it. You can easily reload without breaking the air connection, and there is no teching involved. This innovative product gives you all the benefits of HPA and transforms your M4's buffer tube into a housing system for Co2 capsules to which in turn powers the HPA engine of your choice. 2019 Airsoft Megastore All Rights Reserved. 30 round double stack stack capacity Airsoftjunkiez.com custom HPA Builds. 49 The Beginner HPA Airsoft Guide is something I have wanted t. If you are interested in getting started with an HPA setup for Airsoft this is the video for you! BBs - Premium Bottles $ 12 - $ 19. Gun Features: Works with Other ASG Scorpion EVO3 Accessories like Magazines, Wolverine Airsoft Inferno Gen. 2 Engine Built-In, Designed to Work Internally only with Wolverine Airsoft, Limited Amount of Shots before Needing to Change Capsules, Eliminates any Resistance in Pulling Back the Cylinder, Needs Hop-Up Upgrade for Maximum Performance.