Billing themselves as "Toy Gun and Military Goods" this looks to be a tiny Japanese Airsoft/Army Surplus shop in Japan. They carry many products also seen at other retailers like Straightline Collectibles. These holsters below may well be the exact same holsters that Straightline Collectibles sells.
How about a fast draw using a model gun or air gun? Put on your jeans and measure the size with the gun belt attached. Please order in inch size. 1 inch = 25.4mm As a guide, the size of jeans to be worn + 5 inches is the size of the holster. Since it is an overseas manufactured product, it may have some scratches and dirt during transportation. Please note.
It is a high-class Ver replica of the holster used by Eastwood in the movie “Gunman of the Sunset”. Clint Eastwood Sunset Gunman Cowboy Holster Luxury Gunbelt