The Propane Adaptors at Airsoft Innovations are given an upgrade and now they're now availale in high-strength steel... "We've noticed that the aluminum adaptors out there have a habit of deforming, making them a risky buy. In response, we created the industry's first and only high-strength steel propane adaptor. These things have been drop-tested from 10 feet with no damage at all. We also include a plastic tip in the kit, for all those extra-sensitive devices out there. At $25 for our steel adaptor, why would you buy anything else? Available now at www.airsoft-innovations.com, or your local retailer."