EAA lists the Tanfoglio Stock III at 2.8 pounds (really helpful when fractions of ounces matter). I want to buy a Stock 3 for USPSA Carry Optics (oh, and don't start me on how the USPSA arrived at an arbitrary 45 ounces as a max weight WITH magazine - looks like I'll be 3D printing mags now - want some?). By my "precise" calculations, removing the front and rear sights deletes 1.4 ounces from 44.8 and then adding 1.2 ounces for the Vortex Viper and .4 for the mount makes EXACTLY 45 ounces. WooHoo, perhaps I should buy a lottery ticket today. Does anybody have any experience with this combination? Are the weights accurate? Are there other legal weight reduction modifications that are legal?