Cool, I'm glad you like, it means a lot coming from a master such as yourself
Whew! I was worried I was hijacking your thread by answering questions directed to you. I'm trying to give as much due credit in my responses and only answer questions I actually know about. You can consider me your apprentice in this amazing art as I am truly hooked.
I managed to pick up one of the last longshots (they only had four) from toys r us in Chester for my bro's pulse rifle mod, and an element ex 6 (for £10). I now have a cool scope for the long strike/halo mod (I think it looks halo-ish anyway), and an extra "laser" sight for the FrankenNerf (I've started calling it The Pug.
While I'm on the subject of lasers, here's what it looks like on "the pug" (shyly modeled by its happy owner) :
I sripped out and drilled the battery compartment to fit my eldest's pen laser. It did have a button for an led, but was given permission to remove it.
I then chopped up the slidy focus thing for a new inner switch to turn the laser on (I made the first one too shallow so ended up having use the other side) :
Once I was happy with the alignment and everything was secure I drilled out the lens, and hand routed the remaining so it was flush to the orenge plastic (dremel is your friend ). The lense is a great alignment tool, so leave the lens for last as you can see the laser as it passes through making it easy to get it bang on.
For better results I'd also use a one trick pony pen laser. The laser emitter is off centre in this one to make room for the now useless led. It's no biggie with this one off mod, but I've come up with a better idea and I'll need a centred one for it.