Aleksey above ID'ed it correctly
This is a Musket Flintlock 1700's or so, usually wrapped in a lead sheath or
binder. The flintlock musket was the main firearm in Europe late 1600's the early 1800's
here is a example
http://www.metaldetectingworld.com/detecting_tavern_site_p41.shtmlI think maybe yours is coming out of the middle east
The Ottomans marched from Istanbul across
Syria to meet Napoleon in the late 1700's around Jezreel Valley in
Israel at Mount Tabor/Acres and such.
These have all looked like they were coming from a dry environment.
I have seen a few of these floating around on
auction sites the last yr or so. Can not say authentic or not but have no reason to doubt it.
cw