Abbey Ultra Gas is a mid-power airsoft propellant engineered for temperature control and versatility. In warm climates, it moderates rifle muzzle energy to safe levels. In cold weather, it provides enough pressure to cycle lightweight plastic pistols when lighter gases like Abbey 144a fall short. Available in two sizes—700ml standard bottles for maximum refills and 270ml mini bottles for field portability—Abbey Ultra Gas delivers consistent performance wherever you skirmish. Both come fitted with an o-ring friendly polymer fill nozzle, protecting valve seals during cold-weather fills. Featuring suspended lubricant technology, Abbey Ultra Gas keeps o-rings fresh and sealed without settling. Unlike silicone-based alternatives, the lubricant remains evenly distributed, eliminating the need to shake before use and preventing operational issues between metal components. Medium pressure. Maximum reliability.