I recently purchased a TMXL which included this Mel Hunting P4 release trigger. I do not have need for it, so looking to sell. $700 shipped to lower 48. I was told this is 1 of 8 created. P4 LOP adjustment works as expected. Trigger guard is beautifully engraved. Spare spring is included. It is noteworthy that at some point in its life, the backend was ground just a bit too far (see pic). This does not prevent it from locking in place soundly, but you can feel a slight amount of play - at least in my TMXL. Happy to provide any additional pics as requested. I'll admit, my knowledge on this trigger is limited to what I've posted above. Maybe others can help to shed additional light if they are knowledgeable.