Iver Johnson 1911 Barrel Features This Iver Johnson replacement barrel is machined from 4140 steel and finished in black oxide for durability and corrosion resistance on a working 1911 pistol. The 6.75 length is built specifically for the XL6 size 1911 platform replacing a factory barrel or upgrading an existing one with threaded capability. A 1:16 twist rate across 6 lands and grooves is matched to .45 ACP for consistent accuracy downrange. The barrel ships with a thread protector cap keeping the .578x28 threads covered and protected when a suppressor or compensator is not mounted. Because fitment on a 1911 can vary between manufacturers some fitting may be required to get the barrel running smoothly in a given frame and slide. The barrel is compatible with most XL6-size 1911 pistols but does not fit the Iver Johnson Gen 2 1911 so buyers should confirm their frame generation before ordering. This barrel does not include a barrel link or pin so those parts should be sourced separately or reused from the factory barrel. For 1911 shooters wanting a threaded option in .45 ACP this barrel offers a straightforward upgrade path. Iver Johnson 1911 Barrel Specifications Manufacturer: Iver Johnson Model: 1911 Barrel Caliber: .45 ACP Barrel Length: 6.75 Material: 4140 Steel Finish: Black Oxide Twist Rate: 1:16 Rifling: 6 Lands and Grooves Thread Pattern: .578x28 Compatible Hosts: Iver Johnson XL6 1911 Available At: GrabAGun