There have been several disussions on these trailers (US mil M101 and M105). Do a search for the M101 and see what comes up.
Biggest things to consider for these trailers:
Weight - M101 (1275/empty tongue-120); M105 (2375/empty tongue-~300)(lbs)
Bed size - M101 (7x5x1.5); M105 (8x6x2)(ft)
Tire size - M101 (36" 11.00x16); M105 (38" 11.00x20)
Electrical lights - 24v
Togue - lunette
Dead weight - tires, axles, drums
Benefits - individual side parking brakes, tilt capability, drop tailgate.
I've owned M1052, M101A1, and M416 over the years. I enjoyed the M416 for camping gear, but I had a Bronco to pull with it. I purchased the M101A1 for its larger size and carrying capacity. I am truely glad I sold the M105 when I did. This is what the M105 looks like behind the Bronco.
Soon after, not much camping so sold it. I've purchased a M101 rolling frame as well and currently use to for a camping trailer frame. Its a bit beefy.
For pricing, I haven't paid more than $250 for. I'm local to a gov't liq site.
Here is a
M116A2 (M101 with surge brake on tongue) that still has another day for auction to end. I don't have storage for it, otherwise I'd bid on it.