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391 PISTONS ?

Discussion in 'Shooting Related Threads' started by kevin a., Mar 11, 2012.

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  1. kevin a.

    kevin a. Member

    Joined:
    Apr 17, 2011
    Messages:
    586
    are there different gas pistons for heavy loads and light loads ?

    i have a spare brand new piston that came with my used 391 -
    it looks a tiny little bit diferent .

    i will try and get pics later

    kevin
     
  2. BAD 303

    BAD 303 Active Member

    Joined:
    Apr 13, 2006
    Messages:
    3,544
    The Urika II pistons had small serrations all the way around the mouth of the piston. Earlier models were smooth. Also the Angle Port and Briley models have different foot designs than the factory models.
     
  3. Dickgshot

    Dickgshot Well-Known Member

    Joined:
    Jan 29, 1998
    Messages:
    3,673
    Only one piston, and the standard Beretta piston is as good as any
    of the after market one. I bought a spare one six years ago. It's
    still in the package. I have about 40,000 rounds through my 391.
     
  4. kevin a.

    kevin a. Member

    Joined:
    Apr 17, 2011
    Messages:
    586
    thanks guys - i kinda thought that -but just wanted to be shure

    kevin
     
  5. 4th. down

    4th. down Active Member

    Joined:
    Jan 29, 1998
    Messages:
    653
    The 391 pistons that you refer to are basically the same - don't worry about it. It's the piston springs that are different for light loads and heavy loads. The gun comes stock with the light piston spring. Contact Coles for the heavy piston spring.
     
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