Air-cooled .50 caliber guns in 1:96 or 1:100 scale

Hi All,

Can any of you help me?  I'm wondering if anyone makes air-cooled .50 caliber machine guns (aftermarket) ... NOT  the beautiful  1:96 scale water-cooled .50 caliber machine guns made by J & D Productions, but the air-cooled version of the gun.  Is there such an animal?

Thanks,

Garth