No. The only left hand actions you see are on DBL shotguns. Its extremely unusual to find a left hand action on any kind of musket or rifle. There is a LH flintlock action uncovered near New Orleans in a dig, all rusted, that appears to have been on a French made fowler, or Fusil, but that is the ONLY LH lock on a musket or rifle I have heard about.
Military arms were all made RHed, for convenience of storage, and transportation. All recruits were trained using their right shoulders to carry and fire these muskets. That practice carried on right through the Korean War. LHers had to learn to close that left eye and shoot with their right. I did see some live footage in a WWII film reel showing a U.S. sniper using a bolt action rifle with a scope on it, shooting it off his left shoulder, and using his left eye, but the reason I noticed was because it was so unexpected, knowing how they were trained.
Only when the M-16 was made, was any thought given to putting a deflector to keep brass from kicking back into the faces of LH shooters.
As soon as Mauser actions became available around the turn of the 20th century, gunsmiths began finding ways to convert them to LH for sportsmen who could afford that kind of work. Before that, Lever Action guns were considered "Neutral", to be used by both RH and LH shooters. Pump actions were available to extract empty casings and eject them out the bottom of the action( Ithaca Model 37 Shotgun, Browning Semi-Auto .22 rifle) But for the most part, Sporting arms were made for RH shooters, with little thought for LH shooters.
Today, you hear from RH shooters, and even some of the older LH shooters here, that it should be NO PROBLEM shooting a RH rifle- flintlock to SA-- with your LH. The question I ask, always of these folks is, If WHERE the action is located on the rifle/shotgun does NOT matter to shooting it with either hand, Then why don't RH shooters buy LH action guns to shoot????
I grew up learning to shoot RH rifles, and just dealing with the problems. As soon as I could afford a LH bolt action rifle, I bought it. I have a LH pump shotgun. There are LH Semi-auto rifles in various calibers that look like, and still use a lot of parts for the M-15/N16 rifle. And a company made a LH .45 Colt Clone for awhile. There have been LH Double Action revolvers.
We have seen LH flintlocks, and percussion locks made on guns, now, for the past 30-50 years, and they were a "custom" item before that. I don't recall ever seeing a LH Mule Ear lock, but since these are almost always hand made by the gun builder, I am sure one exists out there.
Underhammer actions are " Neutrals", but since the Hopkins and Allen guns ceased being produced, these guns are in short supply, and new ones are built by their owners, either making the actions themselves, or buying the parts or actions from one of two makers still doing them.
If you have a specific Question about a certain make of gun, send me a PT. I spent lots of years hunting information on LH guns 30 years ago. When I found that they simply didn't exist in Colonial America, I decided to not worry about History, and had a semi-custom made rifle with a LH action made or me. That Steel barrel isn't historically correct, either. :hmm: :grin:
:nono: :barf: :cursing: 
