The Aero Precision ATLAS R-ONE is a complete rifle featuring Aero's R-ONE handguard, a lightweight aluminum free-float design that balances stiffness with minimal weight at a price well below comparable premium handguards. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2019, USA Weight: 60 oz Overall length: 33" Status: Active Intended use: Tactical, Competition