Valiant Airsoft shows a mechanical airsoft gun for those looking for a custom HPA powered airsoft gun. If interested you can get a pre-built one called the LA Innovations x Nexxus HPA Rifle Build. This includes a custom-built HPA rifle with a specified upper for $999.99. The rifle is constructed according to customer specifications and is shipped within one week. The bundle is presented as a competitive option for entry into competitive airsoft.