Quote:
Originally Posted by ThunderCactus
I highly recommend against drilling holes in polycarbonate, especially a hole pattern. It will weaken, and it does crack. Remember it's not just 470fps BB's you have to stop anymore, it's guys with 650fps GBBRs that didn't know you need an NPAS in 30 degree weather, and anything you might trip and fall into.
Also, any kind of modification to the polycarbonate completely voids the ANSI and MIL-SPEC ratings.
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^ This.
I know I wouldn't accept these at one of my games if they'd been modified from factory condition.