Thanks for the info ksuechuc, I'll keep my eyes open for it as it sounds like my safest bet.
Black patch, you're somewhat correct about my intentions but the real idea can be summed up by 'Embrace the suck'. I embrace it and love sweating my balls off and having a good work-out while running around with a ton of weight and feeling 'Goddamnit that was awesome!'. And thanks for the pointers, I was looking into the lead weights idea as I saw them used in cheap springers back in the day to make them weigh more than the plastic that they were. A GBB is a little out of my means right now however, I just bought a new VFC 416 and put in a bunch of upgrades for it, but it's on my to do list

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Thanks for the good pointers guys.