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M1 Garand Gas Cylinder and Op-Rod Gage


Product Description

Our unique and handy gage will help you quickly and easily check for worn gas cylinders or undersize op-rod tips.


To Check Gas Cylinder:

  • Insert the gage into the front (threaded end) of your gas cylinder.
  • The gage should stop with the silver groove still visible at the mouth of the cylinder.
  • If the silver groove is not visible then the cylinder is worn and will need further inspection or repair.

To Check Op-Rod:

  • Measure and make a small mark on the tip of your op-rod at .450” (7/16”).
  • Insert the gage onto the tip of your op-rod.
  • Op-rod should go into the gage and stop at .450 of an inch (7/16”).
  • If your op-rod goes in further (up to .680 or 11/16”), then it is undersize.


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0.10 LBS


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