Ruger AR-556 MPR 5.56 NATO 18" Barrel 10rd Magazine 8535

The Ruger AR-556 MPR delivers precision shooting capabilities with its 18-inch nitride-treated barrel and free-floating handguard system. This multi-purpose rifle bridges the gap between tactical applications and precision marksmanship with enhanced accuracy potential over standard carbine-length platforms.

What Makes This Different

The 18-inch barrel length provides increased velocity and accuracy compared to standard 16-inch carbines, generating approximately 100-150 fps more muzzle velocity with most ammunition. The nitride treatment offers superior corrosion resistance and barrel life compared to traditional chrome lining, while the 15-inch free-float handguard eliminates barrel contact points that can affect accuracy. The rifle-length gas system reduces felt recoil and enhances reliability with various ammunition weights.

Key Features

• 18-inch chrome moly barrel with nitride finish for enhanced durability and accuracy
• 15-inch free-floating M-LOK handguard allows accessory mounting without affecting barrel harmonics
• Magpul SL buttstock provides adjustable length of pull and cheek weld
• Rifle-length gas system optimizes cycling with 5.56 NATO and .223 Remington ammunition
• Hard coat anodized upper and lower receivers meet mil-spec standards
• 10-round metal magazine complies with restricted capacity requirements
• Standard AR-15 platform accepts aftermarket triggers, stocks, and accessories

The extended barrel length and rifle-length gas system make this configuration well-suited for precision shooting applications, competitive marksmanship, and hunting scenarios where accuracy takes priority over maneuverability. The free-floating handguard maintains consistent point of impact when accessories are mounted, while the M-LOK slots accommodate bipods, lights, and other tactical accessories. The nitride barrel treatment withstands high round counts and environmental exposure better than standard phosphate finishes.

Technical Specs

• Caliber: 5.56x45mm NATO/.223 Remington
• Barrel Length: 18 inches, chrome moly steel with nitride finish
• Overall Length: Approximately 35.5-38.5 inches (stock dependent)
• Weight: Approximately 6.8-7.2 pounds
• Gas System: Rifle-length
• Handguard: 15-inch free-floating with M-LOK attachment points
• Stock: Magpul SL adjustable buttstock
• Magazine Capacity: 10 rounds, metal construction
• Twist Rate: 1:8 inches (typical for this model)
• Finish: Hard coat anodized black

This rifle configuration represents solid value in the precision AR-15 market segment, offering features typically found on more expensive custom builds. The combination of extended barrel length and quality components provides a foundation for accurate shooting without requiring immediate upgrades.