Ruger AR-556 8529 5.56 NATO 16.1" Heavy Barrel 30+1 w/ Magpul PMAG

The Ruger AR-556 Model 8529 delivers reliable semi-automatic performance with a heavy barrel profile optimized for sustained accuracy. This factory-configured rifle combines proven AR-15 ergonomics with Ruger's manufacturing standards and includes a Magpul PMAG for immediate deployment.

What Makes This Different

The heavy barrel contour sets this AR-556 apart from standard carbine profiles, providing enhanced heat dissipation during extended firing sessions. The 16.1-inch length maintains full rifle ballistics while staying compact enough for tactical applications. Factory threading accommodates muzzle devices without additional gunsmith work, and the 11-inch free-float handguard eliminates barrel contact that can affect precision.

Key Features

• Heavy barrel profile for improved accuracy and heat management
• 11-inch free-floating handguard with M-LOK attachment points
• 1/2x28 TPI threaded muzzle ready for suppressors or compensators
• Six-position collapsible stock adjusts from 10.25" to 13.75" length of pull
• Hard coat anodized finish provides corrosion resistance and durability
• Magpul PMAG 30-round magazine included
• Standard AR-15 trigger group and bolt carrier group

Field performance centers on the heavy barrel's ability to maintain accuracy during rapid fire sequences. The free-float design prevents handguard pressure from affecting barrel harmonics, supporting consistent shot placement at extended ranges. Law enforcement agencies and competitive shooters benefit from the enhanced thermal characteristics during high round count scenarios. The threaded muzzle accepts standard 1/2x28 devices including flash hiders, compensators, and sound suppressors.

Technical Specs

• Caliber: 5.56x45mm NATO/.223 Remington
• Barrel Length: 16.10 inches, heavy profile, 1:8" twist rate
• Overall Length: 32.25" - 35.50" (stock extended)
• Weight: Approximately 6.5 pounds
• Capacity: 30+1 rounds with included Magpul PMAG
• Handguard: 11-inch free-float with M-LOK slots
• Stock: Six-position collapsible, black synthetic
• Finish: Type III hard coat anodized
• Made in USA with limited warranty

This configuration addresses the gap between basic carbines and precision rifles, offering enhanced accuracy potential without specialized gunsmith modifications. The included Magpul magazine and threaded barrel eliminate common upgrade costs, making this a complete package for serious applications.