Hello Gentlemen:
I hope the virus are not affecting (too much) your lifes!
I also hope and pray that an end of the pandemia is near.
I wrote because I have an advise for long recoil operating shotgun owners: to avoid damage to the forend due to the slam the barrel produces when it return to the normal position, I put a hard rubber gasket (the type used for water conections) once you install the barrel and prior to instal the forend. This rubber gasket dampens the knok at the end of the cycle, seems that enough to avoid craks in the forend, a common problem in this type of shotguns. The gasket can not be too thick or the mechanism will not "close". After some use, replace with a new one.
Best,
