Sorry, my camera is loaned out at the moment, but I'll post pictures later for those who don't have Rem doubles to look at while following this thread...The improved system can be spotted across the isle at a gunshow by simply noting the distance between the sear lever axel and the stock face. On the regular lock the distance is about 1/8 inch...on the improved lock, the distance is about 1/4 inch, giving the sear lever a greater mechanical advantage. The parts are not interchangable of course and I've also noted differences in the stock face, perhaps the improved '94 has a taller action for more strength like Trap Grade Smiths...