i have a picatinny rail its maybe 12cm and can be attached to a shroud like the one on the BT omega
i also have a laser, its mount has seen better days however it does work but you can pick em up on ebay for a few quid with free delivery. the laser itself is fine in all ways only used once.
i also have an Egrip if that takes your fancy as something cool.
and a metal powertube.
if anything takes your fancy ill do updated pics with new proof sheet