So i have equipped the WAR suit which increases armour by 2 +1 and the Plated vest which also increases armour by 1 +1 which should come to a total of 5
WOTC] Modular Warden Gear - Skymods
40 Best XCOM 2 Mods (All Free To Download) – FandomSpot
Heavy weapons | Soldier equipment - XCOM 2 Game Guide | gamepressure.com
How to Create the Best Squad in XCOM 2 - XCOM 2 Guide - IGN