I have found this REPRO Imperial Blaster for sale on eBay.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=370115525063
This doesn't look like any of the other REPRO Imperial Blasters that i have seen or cataloged on TIG (There are 6 different types of REPRO Imperial Blasters indexed on TIG to date)
The auction picture is really poor but you can still make out some details and i have to say this REPRO has the closest detailing to an Original that i have seen for the Imperial Blasters! It has a triangular Clip and the circle at the end of the barrel is present (not found on other REPRO examples to date)
Im 99% its REPRO and not original as the seller has more than 10 available and advised that they have large stock base for this item.
Here is the auction Picture -

I have just bought one from the seller so when i get it ill take some detailed pictures and post them here and on the main TIG site.
Jay