Hi, RTMonforte
Final Option carries a LOT of Glock accessories, so you can try calling up their vaious branches to ask.
However, the only dealer I can recall showcasing any TDI product
is Advanced Weapons Systems in San Juan (they sell the TDI UTA).
Try the
San Juan listings of the FFD
for their number, as well as that of Final Option's main office.
hth,
horge