FNH 303 O-Ring Overhaul Kit. This is a factory OEM FNH 303 part. And is a direct factory replacement part for your worn or missing part.
WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. (California law requires this warning to be given to customers in the State of California.)