I recommend ordering directly from Blast at their website. They are the cheapest you will find them and shipping isn't bad to the US at all. Don't be alarmed though, the online shipping will be high. They will send you a revised shipping amount in an email and ask for your agreement to place the order and bill you. I have ordered from them many times and been pleased every time.
Gino P. Quintiliani - Field Artillery - The KING of BATTLE!!!
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"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf." -- George Orwell