I doubt this applies to anyone at LOF but if you have friends playing paintball who live elsewhere you might pass this along

From 68 Caliber.

Hydrotesting company attempting to find tanks
By Arrowhead Industrial Services
Dec 21, 2006, 22:31

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Arrowhead Industrial Services, a cylinder test and inspection company, is attempting to locate 316 composite paintball cylinders that may not have been properly tested. These cylinders, manufactured by Luxfer, are labeled with hydrostatic test dates ranging from May 2005 through September 2005.

On May 1, 2006, the U.S. Department of Transportation issued a safety notice concerning these cylinders and posted a serial number list and the following statement in the Federal Register: "A person with a listed cylinder should discontinue use of the cylinder and return it to Arrowhead . . . so that autofrettage and hydrostatic test can be completed before its next use." Transport Canada has issued a similar statement concerning non-compliant cylinders being used in Canada.

If you own one or more of these cylinders, you are legally required to comply with these government requirements.
The serial numbers of all affected paintball cylinders are also available electronically on the Internet at www.luxfercylinders.com/ctest in a special database that will automatically and quickly check your serial numbers for you and determine which cylinders, if any, require testing. Each affected cylinder must be removed from service immediately and sent in for testing.

If any of your paintball cylinders need to be tested, please call this toll-free number:
1-800-355-3156. A customer service representative will arrange to have your cylinders tested and returned to you promptly at no charge.

If removing cylinders from service would create a hardship for you, the customer service representative can also arrange to exchange your cylinders for replacement cylinders at no charge.