I've added lanyard loops to all my P85/P89 pistols but haven't seen one for a P95. Were they made? I took an 89 and 95 apart today to compare parts but not the same.
I haven't looked at a P-gun in awhile but if memory serves the retainer is held in place by a pin. Maybe make two holes in the plug so your lanyard could go around the retaining pin. Just a thought.