The Rock River Arms CAR A4 is a semi-automatic modern sporting rifle chambered in 5.56 NATO with a 16-inch barrel and 30-round capacity. It comes in black with a new-in-box condition. 
 

Key Specifications 

• Manufacturer: Rock River Arms 
• Model: CAR A4 
• Type: Modern Sporting Rifle 
• Caliber: 5.56 NATO 
• Barrel Length: 16 inches 
• Capacity: 30 rounds 
• Finish: Black 
• Condition: New in Box 
• UPC: 842834108404 
   

Features 

The CAR A4 runs a two-stage trigger, which gives a cleaner break than a standard mil-spec single-stage and tends to improve shot-to-shot consistency. The 16-inch chrome moly barrel is chrome lined for longevity. An A2 flash hider handles muzzle flash in low-light conditions, and the 6-position collapsible stock adjusts length of pull to fit different shooter builds. 
 
Rock River has been building AR-platform rifles in Illinois for decades, and the CAR A4 sits in their core lineup. The two-stage trigger is the main differentiator at this price point -- most competitors in the category ship single-stage triggers.

Owners of the Rock River Arms CAR A4 generally report solid build quality and reliable operation. The trigger gets the most consistent praise -- the two-stage pull is noticeably cleaner than the standard mil-spec option, and shooters who have experience with both usually prefer it for accuracy work. Cycling is smooth and the rifle feeds without issues across a range of ammunition.

The common criticism is weight. The CAR A4 runs heavier than some competing rifles, which comes up when people are comparing options for extended carry or mobile use. On price, opinions split: some buyers see it as fair for a USA-made rifle with a quality trigger included; others point out that comparable platforms exist at lower price points.

Overall it has a reputation for being a dependable, well-made rifle that shoots accurately. The heavier profile and cost are the main considerations buyers weigh against that.