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The Ruger AR-556 is one of the most popular entry-level AR-15-pattern rifles on the market. Known for its **rugged construction, accessible price point, and dependable performance**, the AR-556 makes a great choice for first-time AR-15 owners, sport shooters, home-defense users, and hunters seeking a versatile modern sporting rifle.
Sturm, Ruger & Co., a trusted American manufacturer with decades of firearms experience, introduced the AR-556 in 2009 as its dedicated AR-15-pattern rifle line. By blending affordability with Ruger’s reputation for rugged reliability, the AR-556 quickly became a best-seller among recreational shooters and home-defense owners. The platform is available in several configurations to meet different needs — from basic carbines to free-float handguard models and even pistols.
| Specification | Detail |
|---|---|
| Caliber | 5.56×45 mm NATO / .223 Remington |
| Operating System | Direct-impingement gas system with rotating bolt |
| Barrel Length | 16.10″ (cold hammer-forged) |
| Barrel Twist | 1:8 RH twist (optimized for a wide range of bullet weights) |
| Gas System | Carbine-length (mid-length on select free-float models) |
| Overall Length | 32.25″ – 35.50″ (adjustable stock) |
| Weight (unloaded) | ~6.5 lb (varies by configuration) |
| Receiver | Forged 7075-T6 aluminum with Type III hard-coat anodized finish |
| Handguard | Glass-filled nylon polymer (basic models) or free-float M-LOK aluminum rail (enhanced models) |
| Trigger | Standard single-stage mil-spec (~6 lb pull) |
| Stock | Six-position collapsible stock |
| Pistol Grip | Standard A2-style (upgradable with aftermarket options) |
| Muzzle Device | Ruger flash suppressor or compensator (model-dependent) |
| Finish | Matte black oxide on barrel, hard-coat anodizing on receivers |
The AR-556 uses a **proven direct-impingement gas system**, providing smooth, dependable cycling with a wide variety of .223/5.56 ammunition. With proper maintenance, it performs reliably under sustained use and adverse conditions.
Forged 7075-T6 aluminum receivers, cold hammer-forged barrels, and Ruger’s high-quality quality control ensure **longevity and consistent performance**. Barrels are finished with a durable black oxide treatment for corrosion resistance.
From the basic carbine with fixed front sight to the free-float MPR models optimized for optics and accessories, the AR-556 offers options for beginners, competitors, and defensive users alike.
Ruger designed the AR-556 to be a **cost-effective yet rugged rifle**, allowing new shooters to enter the AR-15 market without sacrificing reliability or upgrade potential.
Because it’s AR-15-pattern, the AR-556 accepts **standard aftermarket parts and upgrades** — from triggers and stocks to handguards and optics — making it easy to tailor the rifle to your specific needs.
The AR-556 delivers **1.5-2 MOA accuracy** with quality ammunition in standard models. Free-float MPR variants can achieve better accuracy — often approaching 1 MOA — thanks to improved barrel harmonics and better optics mounting surfaces.
The combination of carbine or mid-length gas systems and standard A2 flash hider keeps recoil **light and manageable**, even for new shooters or those firing extended practice sessions.
With proper lubrication and maintenance, the AR-556 has proven to be a **durable, dependable rifle** capable of enduring thousands of rounds without issue.
The AR-556 follows standard AR-15 maintenance procedures. Field-strip by separating the upper and lower receivers, remove the bolt-carrier group and charging handle, then clean the chamber, barrel, bolt, and gas key. Regular lubrication of bolt lugs, carrier rails, and contact points ensures smooth operation and longevity.
The Ruger AR-556 strikes an ideal balance between **affordability, quality, and versatility**, making it a top choice for those new to the AR-15 platform as well as seasoned shooters who want a dependable, American-made rifle. With its range of configurations, upgrade compatibility, and proven performance, the AR-556 stands out as one of the best values in the modern sporting rifle market.
Disclaimer: Always comply with all applicable laws, regulations, and safe-handling practices when purchasing or using rifles. This article is for informational purposes only.
