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  • Writer's pictureT. Logan Metesh

Prototype Self Priming Cosmopolitan Model 1859 Carbine

Updated: May 5, 2021

This prototype Model 1859 Cosmopolitan carbine, which is the only one of its kind, has been fitted with an automatic self priming system in the hammer. When the hammer is cocked, a cam system moves a plate on the underside of the hammer, which puts the primer into firing position.

See how it works in my video here:

This gun will be available in the May 2021 sale from Lewis & Grant Auctions. Visit for more info.

UPDATE: Sold for $9,200 including 15% buyer's premium.

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