Adams Arms Ambidextrous Adjustable Rifle System (AARS) in 5.56, featuring fully ambidextrous controls, an adjustable gas system for suppressor use, and Adams Arms' NiB-X coated piston. The most feature-complete Adams Arms offering for professional users. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2017, USA Weight: 108 oz Overall length: 32.5" Status: Active Intended use: Law Enforcement, Military, Service