Airsoftjunkiez demo their Airsoftjunkiez HPA M240B with Box Magazine that is a custom-built Lancer Tactical M240 Bravo designed for heavy-duty airsoft play. The build features a PolarStar F2 HPA engine and a BullGear box mag insert, a combination that they say is highly effective. Because of the rifle's long inner barrel, the system achieves impressive air efficiency, range, and shot consistency, making it an ideal choice for players looking to field a reliable and powerful support weapon.