Durs Egg - London left Percussion Conversion Lock
Best quality London made flint locks were often converted to percussion, during the 1825 - 1840 transition period. This nice percussion lock has the plate style of an earlier flint lock, with a notch for a 1/2" powder drum and nipple.

A fly detent prevents the sear from snagging the half-cock notch when fired. Used with plain or set triggers. Nearly as large as the left Siler lock, it will fit straight or swamped barrels from 3/4” to 1-1/8” octagon at the breech.

Notice the “cut away” tumbler and “swing out” link, which greatly simplify lock disassembly. These are fine English innovations. This tumbler has a lower arm, made to catch the mainspring if the tumbler arm or link should break while being cocked. But even if this “weakest link” has failed, this fine lock will fire one last shot. You can depend on this nice lock, in good weather or bad, to spark well. English rifles fitted with such a fine lock invariably have a flash hole liner fitted, for fastest ignition. Refer to our reprint of Henry Nock’s Patent Breech patent drawings for details of original flash hole construction.

The lock plate is polished bright inside. Exterior parts are grit blasted to a matte gray.

This lock exactly matches our right hand Durs Eggpercussion lock.

This lock is shown at exact-full-size, in Track's new catalog for gunmakers and gunsmiths.