My "C" grade has triangular horn inserts behind the lockplates where the wood makes it's transition from flat to rounded. I have an "E" grade trap or pigeon gun that has ivory dots behind the plates. these are factory and not an attempt to hide a "pin". There may be something to Uncle Dan's theory about stress relief and checking in this area as neither of these guns shows any sign of checking, whereas I have seen quite a few lesser grade lefevers that have developed a slight check in this area. It is almost never a real crack as L.C.s develop.
All the best, Mal
