Too much yelling going on here. It is simple: The trailer has a sticker (by Law) that states the dry weight and also the GVWR, which is the MAX the trailer should safely weigh on the road.
Here is the weight as stated by KEYSTONE:
Specs for 2017 Keystone - Bullet
Floorplan: 2070BH
(Travel Trailer)
Weight:
Dry Weight: 3,736 lbs.
Payload Capacity: 1,664 lbs.
GVWR : 5,400 lbs.
Hitch Weight: 420 lbs.
I tow my 2015 Laredo 240MK with a 2014 F150 Ecoboost.
240MK specs:
Weight
Dry Weight:5,292 lbs.
Payload Capacity: 1,908 lbs.
GVWR: 7,200 lbs.
Hitch Weight: 590 lbs.
Tow capacity for my F150 is 9800 (Dealer certified). The load on my truck is about 500 # total, driver, passenger and some small stuff in the bed. Most important weight limit is the GVWR.
Happy camping to all.