Andersen Ultimate is an option that requires no slider. It's light and doesn't eat as much payload. Especially good if you already have an in-bed gooseball. Many threads on this board and on YouTube if interested.
2016 Wildcat 295RSX - 2015 GMC 2500HD DblCab Duramax/Allison 4x4 Z71 6.6' Bed
Maxxis 16" E; Ride Rite AirBags w/AirLift 1 wireless compr; Adv.Folding 4 Cover
Andersen Ultimate II Aluminum 5erhitch on Reese Flipball w/Curt 4" offset ball
LCI Ground Control 3.0 4pt + 2pt Elec.Rear stabilizers; 3 Slidecovers; 10ft. Portabote
6000# Dexters; mor/Ryde CRE3000 w/HD Wetbolts; King Dish Tailgater; 5hp Outboard
Dual A/C; Furrion 48 Rear Camera; Champion 3100 Inverter w/Extended Run