just an FYI these UBR converters are made by an airsoft team in ShinChu
edit:
my bad, it is actually by the same company who made the m16 stock conversion kit, Tactical Arms Factory.
http://img401.imageshack.us/img401/6154/picture007yl.jpg
i got this at the hooha show
(if you dont remember me im the baggard from ggi)
heres their website:
here
http://img401.imageshack.us/img401/6154/picture007yl.jpg
i got this at the hooha show
(if you dont remember me im the baggard from ggi)
heres their website:
here