Argus Adamantine Plate Armor

This suit of armor is reinforced with adamantine, one of the hardest substances in existence. While you're wearing it, any critical hit against you becomes a normal hit.
the amour use give you a plus +2 to AC and +3 to gauntlet attacks. the gain following traits as well. 

Firearm Integration: allows you to integrate one firearm at the end of a long rest into the armor which allows the wearer to use their INT modified instead of DEX for said firearm. the firearm cannot be disarmed unwilling and can be drawn for free and stowed for free.

combat computer: the computer is familiar with all combat technical. gain proficiency with all simple and martial weapons.

reinforced joints: gain proficiency in athlete skill check. if already proficient then gain expertise.   

can get a one spell slot back equal to half their Proficiency Bonus rounded up once per short rest.

Plate consists of shaped, interlocking metal plates to cover the entire body. A suit of plate includes gauntlets, heavy leather boots, a visored helmet, and thick layers of padding underneath the armor. Buckles and straps distribute the weight over the body.

Notes: Immunity: Critical Hits, Bonus: Melee Attacks, Bonus: Armor Class, Bonus: Ranged Weapon Attacks, Damage: Melee Weapon Attacks, Proficiency: Athletics, Expertise: Athletics, required an armorer artificer to attune , Damage, Combat, Warding, Artificer, Str. 15 Required, Stealth Disadvantage