Hello. The lock that Ardesa (Traditions) puts on the Pennsylvania rifle is the best of the ones they make, as it has a wider frizzen and the lock has a fly and bridle. He also uses that same lock on the "Pirate" model pistol, but on said pistol he does not place either a fly or a bridle. It also uses that lock in the modern designs of the Pennsylvania carbine that is intended for use with Pyrodex or other substitutes for black powder, which do not exist here in Spain. Spare parts being very cheap, I recommend putting a bridle and fly on all models, for example on Kentucky rifles and pistols, as this improves the gun and makes it possible to fine tune the trigger much more. Cordial greetings from Spain.