Precision built accurate and reliable Arex might sound like a new name in the firearms industry but this could not be further from the truth. Arex is a renowned company that has already earned its good name in the defence industry. The company has been creating and manufacturing defence products for more than 20 years. REX zero 1 is definitely the first pistol that is in-house designed as well as manufactured, but we have been developing and making firearms parts since 2005.