Hey Cassiuss
Check this site...you can get almost any 6004 safariland for a decent US price and new
http://www.copsplus.com/prodnum1613.php
Plus you can get a Streamlight M3 for 100+ $
http://www.copsplus.com/weaponlights.php
I have the real M3 and the one you order...they are similar BUT the end cap is loose and can unscrew it self...probably a o ring with help. But the real M3 is wayyyy better.
If you have the chance to get a M6 on Ebay at around 130 to 175 US. this is a good product but you need to get the right holster as a 6004 that fit a M3 will not work. So choose the right 6004. Also, the 6004 is a dream come true like a hot knife in butter...especially to secure a GBB..
Hope this helps !
D