Big, heavy, steel-framed pistol.
Gas-operated autoloader, with a rotary locking bolt not unlike the M-16/AR-15. Too heavy to import into California, due to their onerous ban on handguns weighing more than 52 ounces.
The gun was actually intended as an IHMSA winner, using magnum revolver cartridges to reliably knock over the 50 pound steel silhouettes out to 200 meters. This was done with a minimum of recoil and a quick follow-up to the next silhouette in the bank at each range.
I have a very early Desert Eagle 94-digit serial number), in .357 Magnum. It's a bit fussy in ammo preferences, doing best with my handloads moving a 158gr jacketed bullet close to 1600fps.
The .44 Magnum Desert Eagles are a lot less fussy about their ammo, most 240gr factory fodder cycles them just fine.
They have a convoluted gas system, and tend to blow powder residue back towards the shooter, since the gas piston is actually part of the front of the slide, moving back towards the shooter. This also makes for a dirty gun after 50-100 rounds, depending on ammo of course.
Wouldn't sell mine for the world, though!