Nope..........
Towing in general:
You will normally run out of payload (truck/TV rating) before you get anywhere close to the max. advertised "Unicorn" trailer rating.
2017 Raptors have somewhere around 1,000 (SCAB) and 1,200 (SCREW) of MAXIMUM payload (yellow tire rating sticker on door jamb) as actually equipped.
Receiver hitch / bumper pull tongue weight will (should) run 10 to 15% of actual trailer weight. SCAB has a #600 max (and #6,000 for trailer) and SCREW has a #800 (and #8,000 for trailer) when using a WD hitch.
Fifth wheel pin weight will run about 18 to 25% of actual trailer weight. Raptor is not specifically "rated" for such.
Tongue and 5th wheel pin weight (actual - not the advertised BS light value!) reduce the available payload.
EVERYTHING you put in the truck (driver, passengers, dogs, tools, etc.) reduces payload.
Do the math. A #8,000 actual weight 5th wheel will have a pin weight of around #1,600 resulting in payload being massively exceeded.
Tail wagging the dog........
"Pulling" no problem - safe stopping and handling - NOPE!
Also, a short bed truck will usually require a "slider" hitch for a 5th wheel approach to keep from bashing the cab corners in tighter turns....and it weighs a bit as well.
The only "1/2 ton" (whatever that is?) I am aware of that has a reasonable chance at a 5th wheel is a F-150 with the heavy duty payload package