HM Defense HMP15FMB556 Raider M556 AR-15 Semi-Auto Rifle 5.56/.223

The HM Defense HMP15FMB556 Raider M556 delivers reliable performance in a modern sporting rifle platform built for versatility and accuracy. This AR-15 style rifle combines proven ergonomics with contemporary manufacturing standards to meet the demands of sport shooters and enthusiasts.

What Makes This Different

The Raider M556 features a forged aluminum receiver set that provides enhanced durability compared to polymer alternatives. The rifle incorporates a mid-length gas system that reduces felt recoil and improves cycling reliability with various ammunition weights. Standard Picatinny rail integration allows for easy optic mounting and accessory attachment without additional modifications.

Key Features

• 5.56 NATO/.223 Remington chamber handles both military and civilian ammunition
• 16-inch barrel with 1:7 twist rate stabilizes bullets from 55 to 77 grains
• Forged 7075-T6 aluminum upper and lower receivers for structural integrity
• Mid-length gas system reduces port pressure and extends component life
• M4-style collapsible stock adjusts to six positions for length of pull
• Standard AR-15 trigger group accepts aftermarket upgrades
• Flat-top upper receiver with full-length Picatinny rail

Field performance centers on the rifle's ability to maintain consistent accuracy across different ammunition types while providing reliable function in various conditions. The chrome-lined barrel resists corrosion and maintains accuracy through extended firing sessions. Competition shooters appreciate the platform's modularity for customization, while the standard configuration suits recreational shooting and training applications.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 16 inches
• Overall Length: 32-36 inches (stock extended)
• Weight: Approximately 6.5 pounds
• Twist Rate: 1:7 inches
• Gas System: Mid-length
• Magazine Capacity: Accepts standard AR-15 magazines
• Stock: M4-style 6-position collapsible
• Finish: Hard coat anodized receivers

The HMP15FMB556 represents solid value in the modern sporting rifle category with standard features that support both novice and experienced shooters. Built to AR-15 specifications, this rifle accepts the full range of available accessories and modifications.