The Colt Conversion Kit contains the complete upper receiver group, including a charging handle, bolt carrier group, and back up sight. Conversion Kits are available in both the standard upper receiver with handguard configuration and Monolithic 1-piece upper receiver with free-floating barrel configuration. All barrels feature a 1/7 right hand twist. Now you can convert any Colt rifle to the most state of the art configurations.
Barrel Length: 16.1"
Barrel Material: Chrome Moly Vanadium Steel
Barrel Twist: 1:7
Barrel Type: M4 Contour, Free-Floating
Caliber: 223 Remington, 5.56 NATO
Finish: Black Parkerized
Front Sight: Fixed Post
Handguard: M4 Polymer
Includes: Complete Upper Assembly, Complete M4 Full Auto Bolt Carrier Assembly, Charging Handle, Manual
Muzzle Type: A2 Flash Hider
Operating System: Direct Impingement
Rear Sight: Magpul Flip-Up
Receiver Type: A3 Flat-Top
Thread Pitch: 1/2×28
Weight: Approx. 5.4 lb