The Ruger American Gen II is a bolt-action rifle chambered in 6mm ARC with a 22-inch threaded barrel and a Burnt Bronze Cerakote finish. It's built on Ruger's second-generation American platform with a stainless steel receiver, a hammer-forged barrel, and a factory radial muzzle brake. 
 

Key Specifications 

• Brand: Ruger 
• Model: American Gen II 
• Caliber: 6mm ARC 
• Action: Bolt Action 
• Capacity: 5+1 
• Barrel Length: 22 in 
• Weight: 6.50 lbs 
• Finish: Burnt Bronze Cerakote 
   

Detailed Features 

• The 22-inch barrel is threaded 5/8x24 and fitted with a radial muzzle brake, so a suppressor or aftermarket brake mounts without gunsmithing. 
• A 1:7.7 twist rate is set up for the heavier 6mm ARC bullet weights typically used at longer range. 
• The receiver carries a Picatinny rail for mounting optics directly, and ships without factory sights. 
• A three-position safety allows the bolt to be cycled with the safety on, useful for unloading without disengaging it fully. 
• The stock has an adjustable length of pull to fit different shooters.

Owners of the Ruger American Gen II tend to like the value it offers relative to other factory bolt guns, pointing to a smooth-cycling action and press-checkable safety as strengths. The Gen II's revised bolt and trigger draw praise from people who owned the original American and consider this version tighter.

In the field, the threaded barrel and included muzzle brake make it straightforward to add a suppressor or optic without extra parts, and the adjustable stock gets credit for helping the rifle fit a range of shooters. Some owners note the factory stock still feels a step below higher-end aftermarket options, especially under heavier loads.

On the 6mm ARC chambering specifically, buyers like the flatter trajectory and manageable recoil compared to larger cartridges, though ammunition selection remains narrower than more established calibers, which some owners plan around by handloading.