This Geissele cold hammer forged barrel is a 14.5-inch, 5.56 NATO heavy profile barrel for the AR-15. It is chrome lined, high pressure tested and magnetic particle inspected. A mid-length gas system and .750 in. journal suit duty-style carbines, and the barrel is threaded 1/2x28 for a muzzle device.
- Caliber: 5.56 NATO
- Length: 14.5 in.
- Profile: Geissele heavy
- Gas system: Mid-length
- Gas block journal: .750 in.; gas port: .076 in.
- Twist: 1:7
- Thread: 1/2x28
- Material: Chrome moly vanadium steel, chrome lined
- M4 barrel extension
