The "UAE" marking and Army Crest seemingly identifies them as from the United Arab Emirates. There is some evidence to support this, however, I consider the identification to be speculative at this point.

The crest on the opposite grip represents the UAE Armed Forces. The falcon (not eagle) is a common Middle East symbol of strength and the seven stars represent the Seven states making up the UAE. The Arabic at the bottom of the crest is Mashat Furat (Armed Forces).

A run of Rolex watches (real ones, not fakes) were produced with this same crest on the dial.

The scabbard markings are spurious. 8448476 is the U.S. Government part number for the M10 Scabbard. The CAGE Codes:

—19204 belongs to US Army, Rock Island Arsenal.
—9A148 belongs to NorcaTec LLC, a New York firm that produces spare parts for military aircraft, naval equipment, and armored vehicles.

Although these resemble the Ontario M7-B bayonet, they are not made by Ontario. They appear to be a product of China. Some examples have been encountered that were marked "China," although this one is not. These very possibly could be purely for commercial sales. However, China is the UAE's major import trading partner, accounting for 15 percent of all imported goods. Hopefully, further information will emerge to clarify their provenance.

Many Thanks to New Zealand collector & researcher, Kevin Adams, for info on the crest and the Rolex connection.

Grip (left): Falcon Crest

Scabbard (body): "M10" and "19204 ASSY 8448476" over "MFG 9A148"