This Geissele cold hammer forged barrel is a 13.9-inch, 5.56 NATO barrel for AR-15 rifles. It is chrome lined, high pressure tested and magnetic particle inspected, with Geissele's taper profile and a mid-length gas system. M4 feed ramps support reliable feeding.
- Caliber: 5.56 NATO
- Length: 13.9 in.
- Profile: Geissele taper
- Gas system: Mid length
- Gas block journal: .750 in.; gas port: .081 in.
- Twist: 1:7
- Thread: 1/2x28
- Material: Chrome moly vanadium steel, chrome lined
- M4 feed ramps