The company specialized in the design and manufacture of autogyros in the form of kits for amateur construction, including under the US FAR 103 Ultralight Vehicles rules.

[1][2][3][4] The company occupied a 10,000 sq ft (930 m2) plant that included lathes, milling machines, drill presses, tap and die making, equipment for heat treating metal, plating and welding.

[5] A subsidiary was Santa Ana Metal Stamping, which Brock set up to produce stamped metal parts using numerical control machinery.

[6] The company closed for business at the end of 2005 after Brock's death on 19 October 2001 while landing a Thorp T-18.

Aircraft Spruce & Specialty Co purchased the Cozy Mark IV parts inventory, jigs, tooling and drawings.