Beretta A391 Extrema 2

Harper · Nov 30, 2017

I have a A391 that I have shot hundreds of times without trouble. It has been sitting in the safe for about 4 years. Prior to storage it was cleaned and reassembled. I took it duck hunting this past weekend and it would not close the bolt all the way after shooting. I knew that cleanliness was not the problem, but was not sure of what it was. When I got home, I attempted to break the gun down and found that the o-ring on the piston is either swollen and causing the piston to stick or some how, I installed the wrong o-ring back in the gun. I tend to think that the o-ring possibly swelled from sitting to long. Have any of you had anything like this happen? If so, any advice would be appreciated. I ordered a new o-ring and am waiting on it now.

3fifty7 · Nov 30, 2017

O rings can swell if in contact with some oils, likely(hopefully) the problem.
I've had a 391 Xtrema2 for about 8 years. I cleaned it after each of the first 2 seasons but not since. I brought it to an Advantage Group Shotgun class (6 boxes of target loads, a couple dozen rounds of buckshot and slugs as well) in addition to duck hunting every year. Hell when I went to get it out of the safe this fall it wasn't there, it was still zipped up in the padded carry case in my hunting room closet from last year ! I gave it a few quick shots of Ballistol then fired 3 shells through it and never looked back.

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Harper · Dec 1, 2017

New o-ring and she is shooting fine. I think that the old one swelled or someone (not me) used a standard o-ring you can buy at Auto Zone.

Beretta A391 Extrema 2

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