Are .223 and 5.56 magazines interchangeable? Yes, externally, the two cartridges have the same dimensions, so a 5.56mm magazine will work for .223 and vice versa. Does and AR-15 shoot 556 or 223?

Today, it’s common to see rifles chambered for both, especially AR-15 variants. And it is equally common to see ammunition in both chamberings next to each other on store shelves. But they aren’t ...

SAAMI has an established maximum average pressure rating of 55,000 psi for the 223 Remington and 57,500 psi or less for all AR-15 compatible cartridges. There are no SAAMI 5.56 NATO pressure ...

223 Rem. and 5.56 NATO ammunition available ... 1:7”, which completely encompasses the twist profiles found in the AR-15 family. Despite the more rugged construction of its bullet, with a ...

If you are new to the AR scene, you may not be familiar ... at 1/2x28 TPI to accept a wide variety of 5.56-compatible muzzle devices. The 15" free-float aluminum Palm Handguard features a full ...

The Texas shooter was, according to early reports, armed with an “AR-15” style weapon and ... The firearm may use a 5.56 NATO round or a .223 caliber, the difference being that the former ...

There are two popular types of AR-15 calibers ... Rifles that are built to handle the increased pressure of the 5.56 NATO can shoot the .223 Remington, but the reverse is not always likely.

223 Remington. Or as the military referred to it as, the 5.56×45 — based on the .222 Remington. The U.S. Military adopted the 5.56×45 cartridge, along with Armalite’s M16 rifle in 1963, laying the ...

Meanwhile, an AR-15 5.56 caliber weapon clocks in at 3,251 ... including bullet size and weight and barrel length, but generally .223 or 5.56 rounds typically fired from AR-15s have a velocities ...