Could someone explain to me (MadMike) why all M16 variants have 'Property Of U.S. Govt.' stamped on the side? Surely other armed forces must have at some point used the M16, and what if they did without permission anyway, guerillas for example, they are not exactly going to say 'oi, you cant use that, it isnt yours, give it back'. That is something that has often baffled me, along with the one that Beretta put on the side of the 92FS and H&K put on the trigger guard of the USP, 'Read Manual Before Use'. The only time anyone ever reads a manual is when something goes wrong, or you cant figure out how to make it work by yourself. I would also like to know what markings apart from the safe semi and auto ones the M4 should have on the right hand side of the reciever? I have often wondered about engravings/trademarks on guns, and personally I like them. I found nothing more distracting when I got a G36 as a wall hanger, and it had Electric Air Gun stamped on the side. I had to buy another body without that on just because it bugged me so much, and yet still it is not right as I know that that should have a stamping on the right also (although I am not sure what it is). I can live with the slight differences however, and think that Hudson did a grand job on the Tommy gun (even if it doesnt work) by changing the logo the way that they did. That was good. I dont like MGCs attempt because it has Model Gun Corporation all down the side. Anyway, I am detracting slightly onto the subject of trademarks in general, and not of the M4, which is what I was curious about. Also, shouldnt it have a marking on the front sight blade stating the twist of the barrel rifleing or something as well?