I am a little late but I am just discovering instagram on my I phone, all pictures where taken and edited on my I phone nothing special was just drinking my mourning coffee and having fun.
After seeing the ammo pic, the first thought that came to mind was how awesome a .50 cal glock would be.
They sell a conversion kit to turn it into a .50GI: http://www.brownells.com/.aspx/pid=27083/Product/50-GI-reg-CONVERSION-SYSTEM-for-GLOCK-reg- Its only a little bit power full then the .45acp: I personally would not wast my money on it. I'll stick to the Mark XIX and S&W 500 for my .50 cal hand gun fun.