This Geissele cold hammer forged barrel is a 16-inch, 5.56 NATO heavy profile barrel for the AR-15. It is chrome lined, high pressure tested and magnetic particle inspected, built for hard duty use and accurate shooting. It runs a Geissele-length gas system with a .750 in. gas block journal.
- Caliber: 5.56 NATO
- Length: 16 in.
- Profile: Geissele heavy
- Gas system: Geissele length
- Gas block journal: .750 in.; gas port: .075 in.
- Twist: 1:7
- Thread: 1/2x28
- Material: Chrome moly vanadium steel, chrome lined
- M4 barrel extension