Confused about 30S VS. 30 Slide Weight.. new question: stay on topic. For physics nerds and gun enthusiasts only please. I just bought a 30S and am taking her to the range tomorrow and I ran across this post while surfing: http://www.ar15.com/forums/t_5_13/127641_FedEx_Delivered_a_G30_Gen4_to_me_today.html The new Gen 4 30 owner says his recoil assembly is marked as 0-1-9... My new 30S uses the exact same RSA!?!? but the slide is almost 4 ounces lighter? This seems really weird to me, I would think that the heavier slide of the normal 30 would have much more inertia to overcome and would use a spring with less coil tension but it uses the same one? How can a significantly heavier slide use the same RSA as the slim G36/30S slide? I always figured engineers at Glock and other manufacturers were math geeks computing these type of ratios... I must be missing something here :embarassed: Wanna kill these ads? We can help!