It's still a gamble however less of a gamble than if it was full metal. However if it's a customs agent who is 100% by the book then it probably has a 75% chance of being rejected and destroyed.
Basically what it boils down to is either gamble your money and hope that you get an agent who sees it as a toy or buy in Canada where the big box store and/or private retailers have done all the work for you.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE