Judging from the bayonets on the ones I can see?
Looks like movie actors with reproduction Brown Bess muskets.
rc
They could be anything.
I can't see them well enough to tell.
At any rate, they are Holloywood movie props.
Figure out what uniforms the actors are wearing, or what movie the photo is from and you could pin it down to what they are "supposed" to be.
rc
Grasshopper,
Google is your friend...
http://www.veteranarms.com/ReproductionMuzzleloadersandFlintlocks/1777-French-Charleville.html
http://www.dixiegunworks.com/product_info.php?products_id=956
http://www.middlesexvillagetrading.com/M77FR.shtml
http://www.trackofthewolf.com/Categories/PartDetail.aspx/488/1/AAI-831