Adding to the above comments, which are accurate, the front side facing where lock sits has been "slabbed" with a new piece of wood to re-set the new replacement lock. You can see the glue joint about 3/16" back from the front of side facing and lock surface. Barrel has been shortened a couple of inches based on current location of rear sight, and muzzle cleaned off and coned for easier loading when gun was restored. But, despite the alterations, you still have a nice, curly maple stocked Jarecki rifle with a clear location stamp of "Erie PA" which is nice to see, and he's not a commonly seen maker. One good detail is that, when the new lock was installed, it was probably smaller than the original percussion lock, or else the restorer would not have removed the old lock mortise by shaving stock down and then building back up with a new slab of wood. That said, an appropriate percussion lock can probably be re-installed in the side facing without much problem, if you want the gun put back into its original configuration so it is more collectible and valuable. Shelby Gallien