Are there any technical issues surrounding the use of US version poppers in the uk or is it down to frequency legalities? I tried to buy european standard poppers and have them sent to a US address and collect them when I visit in may but it seems Euro versions cannot be bought in the US only in a Eu country. Am I likely to get my collar felt using US ones over here? I cant see any problem personally as they all work on the same standard ST-E2.

