In looking at the new crop of 7600 rifles I see that they have the j lock. Is this a bad thing that makes the rifle fucntion any worse than a standard 7600 w/out the j lock. I ask because it seems that when a company changes a feature on a rifle the gun dealers swoop in and start charging extra for the old version as if it is somthing special. Some may call it supply and demand I feel it's creating a pre 64 type premium on rifles that may not warrant that. I will state that my history with the 7600 has been great. I feel the 7600 is a fine rifle with a good history.