*Additional Specifications: *
Cruise Speed: 139 mph (Bell flight document) & or 160 mph (Wikipedia)
Max/Overspeed: 222 mph (Wikipedia)
Rate of climb: 2,790 ft/min (14.2 m/s from Wikipedia)
Length: 58 ft 3 in. (Wikipedia)
Height: 14 ft 4 in. (Wikipedia)
Main rotor diameter: 48 ft (Wikipedia)
Main rotor area: 1,808 sq ft 4-bladed main and tail rotors (Wikipedia)
Empty weight: 12,300 lb (Wikipedia)
Max takeoff weight: 18,500 lb (Wikipedia & Bell flight document)
Max useful load: 5,764 lbs (Bell flight document)
Fuel capacity: 412.5 gl (Bell flight document)
Hardpoint/Pylons: 6
Inner+Outer: Hydra 70's (LAU-68C/A (7 shot) or LAU-61D/A (19 shot), AGM-114's, AGM-179 JAGM's (4-round m299 mount)
Wing tip: AIM-9M/X Sidewinder AAM.
SOURCES:
Specifications have who I sourced from:
Wikipedia: https://en.wikipedia.org/wiki/Bell_AH-1Z_Viper
Imo every suggestion needs a good source to back things about the aircraft up, and on the Bell website there is a handful of pages on their helicopters and the details of them in a brief yet constructive PDF. Wikipedia gives a good detailed explanation with (most of the time) good sources to back up their statement on things, and the AH-1Z page had a good list of specs.
(Seriously though, Bell has a awesome website. Should check it out.) https://www.bellflight.com/