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.223 Rem. vs. 5.56x45 mm NATO: Is It Safe?

I have received a slew of questions—many from first time AR-type rifle buyers—about the .223 Rem. and the 5.56x45 mm NATO cartridges. Can I shoot 5.56x45 mm NATO in my .223 and vice-versa? Are these the same cartridge?

Testing The Army’s M855A1 Standard Ball Cartridge

Spanning a decade-and-a-half, the process of adopting the lead-free 5.56x45 mm NATO M855A1 ball cartridge was hardly transparent. In the end, however, testing indicates that our troops ended up with a better combat round.

The AR for Home Defense: One Expert's Opinion

We sat down with one of the nation’s elite combat veterans, now a renowned tactical trainer, and asked him to explain why his choice for the best home-defense tool is the “general-purpose rifle,” America’s favorite, the AR platform in .223 Rem.

Tested: Ruger SR-556 Takedown

Designed to be easily broken down for convenient transport and storage, yet with the capacity to be rapidly reassembled and brought to bear if needed, takedown models of long guns have been produced since the latter part of the 19th century.

Tonight on American Rifleman TV: 150 Years of Winchester, Part 1; LWRCI Di

Watch a preview of tonight's episode of American Rifleman TV, which is the first look at the 150-year history of Winchester.

Product Preview: MFT SCPM556 Magazine

Rugged and well-designed, the Mission First Tactical Standard Capacity Polymer Magazine for 5.56x45 mm NATO cartridges (SCPM556) holds 30 rounds, and represents a cost-effective refinement of the ubiquitous aluminum magazines.

Springfield Armory Saint Marches In

For the first time, an AR-15-style carbine is wearing Springfield Armory’s iconic insignia of crossed cannons and flaming bomb.

Tested: Kel-Tec RFB & RDB Bullpups

Ever the innovator, Kel-Tec has developed two handy, affordable and completely bilateral carbines all its own. Do they make it the King of the Bullpups?

Editors’ Picks 2017: FN America M249S Para Rifle

FN America’s Military Collector Series just got a little shorter.

Editors’ Picks 2017: Savage MSR 15s

Savage Arms is officially in the modern sporting rifle business, having released two AR-15- and two AR-10-style rifles.

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