Hello all, Im new to this forum and have couple of questions.1) recently bought a 40c with serial # mpn0784 came with trijicon night sights,no mag disconnector is this a one of the first ones made serial # is very low.2) 3 days later bought for it ctc but I have not been able to practice with this grip laser yet any comments on this 2 questions anyone outhere with similar piece or expirience with laser grips.