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5.56 AR-15 Rifles

(168)
  • 5.56mm NATO
Frequently Asked Questions

The AR-15 is a light weight, affordable, semi-automatic rifle that offers unmatched modularity and ergonomics, which have made it one of the most popular rifle platforms in the United States.

Its modular design allows for extensive customization, enabling users to swap parts—such as barrels, stocks, and optics—with relative ease, and making it one of the easiest firearms to configure and maintain.

While primarily chambered in the .223 Remington, .223 Wylde or 5.56 NATO, the AR-15 can be configured for several other calibers, including .22 LR for "plinking", 9mm for home defense, 6.5 Grendel or 6mm ARC for long-distance, .300 Blackout for suppressed shooting, and .350 Legend or .458 SOCOM for big game hunting.

The AR-15 platform chambered in the .308 Winchester or 6.5 Creedmoor—known as an AR-10—is a versatile larger platform option for long-range shooting, hunting, defensive purposes and tactical applications.

AR-15 style rifles are legal in most of the U.S. but may banned or restricted in some states. All guns for sale online or in-store at Sportsman's Warehouse—including the AR-15—are only sold in accordance with state law, so rest assured if a gun is available for sale in your state, it's legal.

One of the most appealing aspects for many gun enthusiasts of owning and shooting an AR-15 is the sheer firepower they're capable of producing.

Magazines for a standard .223/5.56 NATO chambered AR-15 typically come in capacities of 5, 10, 20, and 30 rounds, with 30-round magazines being the most popular. However, many ARs can also be equipped with 40-round sticks, 60-round drums, and up to 200-round drums.

The simple answer is yes. As with any firearm purchase from an FFL dealer, a standard NICS background check is required. Depending on the state where you reside, other requirements for purchasing an AR-15 may include being 18 to 21 years of age and obtaining a special permit.

While the AR-15 was originally chambered in the .223 Remington or 5.56 NATO, its modular design now allows it to fire over 50 different calibers by swapping the upper receiver.

Most common AR-15 calibers include:

  • 5.56x45mm NATO / .223 Remington: The most widely used AR-15 caliber for shooting, defense and tactical.
  • .300 AAC Blackout (300 BLK): A top caliber for short barrels and suppressed shooting, as it fits in standard 5.56 magazines.
  • 6.5 Grendel / 6mm ARC: For long-distance shooting and medium-game hunting.
  • .22 LR: Ideal for varmint hunting and plinking
  • .450 Bushmaster / .458 SOCOM / .350 Legend: Top "big bore" calibers for large-game hunting
  • 7.62x39mm: Same ammunition used in the popular AK-47.

A functional and reliable entry-level AR-15 rifle costs between $500 and $1000. Entry-level ARs can typically be upgraded later into a mid-range AR-15.

Mid-range AR-15 rifles that offer a balance of quality and performance typically start at about $1000 and can run up to $1500.

High-end, high-accuracy, AR-15 rifles—from manufacturers like Daniel Defense and Armalite—that feature premium components and craftsmanship start at about $1,500 and can run up to $3,000+.

There are many AR-15 brands that consistently stand out for reliability, build quality, innovation, and popularity. Below are a few of the most well-known AR-15 brands and what each is best known for.

Daniel Defense

Known for premium quality and military-grade components. For shooters wanting top-tier reliability and performance.

  • Produces high-end AR-15 rifles with excellent fit and finish.
  • Famous for cold hammer forged barrels and rugged rails.
  • Used by military and law enforcement units.

Colt

Known for original military heritage and proven reliability. For people who want a classic, battle-proven design.

  • Colt is one of the original manufacturers of the AR-15/M16 platform used by the U.S. military.
  • Known for producing mil-spec standards and durability.
  • Often considered a benchmark brand for traditional AR-15 rifles.

Smith & Wesson

Known for producing affordable and reliable entry-level AR-15s. Ideal for first-time AR-15 buyers or budget-conscious shooters.

  • Great balance of price and reliability.
  • Easy starting point for new AR-15 owners.

LWRC International

Known for advanced engineering and piston-driven AR rifles. Great brand for shooters wanting an innovative, premium AR-15 rifle.

  • Builds high-end AR-15 platforms.
  • Known for short-stroke gas piston systems and premium materials.
  • Excellent fit, finish, and durability.