VIPER INTERNATIONAL-PYTHON HEAVY DUTY BARREL VISE With the birth and rise of the Carbon Fiber barrel shooters and home hobbyists have asked me about a barrel vise for them. After several trials, failures and some scrap parts the Python HD is here! This vise can also be ordered with the standard top or Sporter top or with both tops! the standard top will grip barrels diameters from .75" up to 1.4". The Rimfire/Sporter top will grip barrel diameters from .475" up to 1". Please read the bottom of this: This is a HEAVY-DUTY barrel vise! Some of the features of the Python HD: It is 1.3 INCHES WIDE. This bar Mfg: Viper Bench Rest