Assuming that lock is 6.75 inches or so and the bore is .69-72ish, it looks like a post 1763 restocking of mostly 1728/46 musket parts with some 1763ish parts in the mix (sideplate/buttplate_. Stock profile recommends +/-1790s or so. detail shots on the buttplate and triggerguard are lacking, it may have m1754 parts too but hard to tell.