Okay, I've been plucking at the math behind Lever and Roller Delay designs and I've been getting some screwy numbers on bolt carrier mass (way too high.) I've taken a good look at this page http://www.hkpro.com/index.php?Item...ail-of-the-g3&option=com_content&view=article and it gave me a few ideas on reversing the math and coming at it from the other angle. In a nut shell can someone please tell me the mass (in grams please, not slugs) of a CETME/G3 (or whatever civilian .308 variant you have) bolt carrier? I'm messing up somewhere and I think it has something to do with the transfer of energy to the rifle through the roller.