O rings

[Ghost65]

Hi folks
Does anyone know if there is a size chart in metric of what o ring goes with what semi auto shotgun?
Just curious as what is compatible with with what.
Thanks
Terry

 

[tenringbound]

I replaced the gas sealing orings on my Derya MK10 with 1187 orings after the Deryas got chewed up during disassembly.They fit perfect and the gun ran great.

 

[Tactical Ordnance]

O rings for Rem 1100/1187 are made of Viton. I bought and still have a bag full of them, $1. each if anyone wants them.


Casey