I do enjoy building them, but I've not been able to corner any of the early stuff since my last go around a few years back... I was in love with the 604 models and never was a big fan of the forward assist... I have one 604 build for my daughter and had a CAR-15 for my son, gave that one to a friend of mine.. I really like the XM607 (is it the same as XM-177?) you show above Rich... neat, neat guns... Maybe some later on in the future, but mostly M4's and just for my personal use... I need the flat top and optics now as well... best to all, til...lat'r...GT
