jd will have to tell or show what it says. Some that Camillus made had a Remington stamp, but I am guessing this one doesn't. It will have a tang where something has been ground off and Remington ink stamped on. It may have said Buck but more likely was a Camillus actual stamping. The angled bolsters were a Buck standard but a few Camillus sported them also. I have a black sawcut angle bolstered 303 size knife that has a Remington shield and Remington just inked on tang. Camillus would usually overrun their orders by several hundred knives sometimes. Remington could have had those altered fairly cheap as give aways or awards. The rivets could have been added if the knives were taken apart to grind the tangs or during the use of the common parts, per Remington request. 300Bucks
The best guess here is the use of SOME extra Buck parts to make some for Remington. Notice the lack of the clip blade swedge as per the yellow knife above. I think I have a photo of a Camillus that looks like these but with no swedge and a Camillus tang stamp. I think the nail pulls look different also.
To confuse you even more I ran across this photo, but could not find a close-up of the bottom knife. Pop in a buck shield, stamp the tang Buck and you got a Cami Buck. Camillus made knives for a lot of folks. Swedge on the clip blade is right but oh no the bolsters are straight. More straight bolstered stockman were made by Camillus than angled versions.