General Barrel Info: The barrel on an AR-15 originally operates under a 'gas impingement' system, by tapping gas off of the barrel and cycling it back through the gas system to assist the bolt carrier in unlocking and extracting the spent cartridge. AR-15 Barrels come in four different specifications for gas systems, Pistol, Carbine, Mid-Length, and Rifle. AR-15 Barrels vary between profiles as well from Government, to Heavy, and Slim. Thanks to the modularity of AR-15, you can choose different calibers starting with the barrel, each with its specific twist rates. Choosing your barrel for your next AR-15 build has never been easier.
About This Barrel: The "Calliope" Barrel is made by ELD Performance it is 20" long, and is machined from 4150 Chrome Moly Vanadium, and is finished in a nitride appearance. Chambered for .223 Wylde, using a medium profile design, this barrel will fit your next AR-15 build perfectly.
About the Profile: Medium - Medium Profile barrels are designed to have an even weight distributed from the beginning to the end of the barrel, this results in a rather tubular-looking appearance but with identical rigidity and properties to a government profile barrel.
Barrel Classification: Rifle
Length: This Barrel is designated as a rifle barrel with an overall 20" length.
Caliber: .223Wylde - This barrel is chambered to fire both .223 Remington and 5.56 NATO, the most commonly used round designed for the AR-15 platform. .223 Wylde is a commercial specification of 5.56 NATO and will still allow you to chamber and fire 5.56 NATO cartridges.
Material: 4150 CrMoV - Chrome-Moly Vanadium, or simply "CMV", is the official mil-spec gun steel developed by Colt Firearms for the military-issued M16 and M4. It contains the same elements as 4150 steel. It also contains Vanadium. Vanadium significantly increases the strength, hardness, and high-temperature stability of the steel.
Finish: Nitride - Nitriding is a process during manufacturing that diffuses nitrogen into the steel to make a case-hardened surface for improved resistance and strength. A Nitrided barrel typically has a gloss black texture.
Thread Pitch: 1/2x28 - This threading is commonly found on barrels chambered in 5.56, .223, and .224. This will allow the installation of most muzzle devices such as flash hiders, blast cans, and compensators threaded to 1/2x28 threads.
Brand: ELD Performance
Model: "Calliope" 20" .223 Wylde, Rifle Gas, 1:8T, Medium Profile, Nitride, 41V50
Caliber: .223 Wylde
Handguard Compatibility: Freefloat
Gas Block Size: 0.75
Gas Length: Rifle
Twist Rate: 1:8
Material: 4150 Chrome Moly Vanadium
Thread Pitch: 1/2x28