well... I hope you like billys advice.
have fun.
here's a photo of a recent Doopy Do's kit I made up:
This is my version of the london prop store blaster... it features a few changes on the normal
blaster we usually see for ESB.
U channel aluminum T Tracks. and a U channel Sight rail, along with a farther back
scope location.
normally it would sport the m19 scope, but I swaped that out for an M38 copy.
-----------
it has a light in the scope that's motion activated, and the D ring is metal, and works.
the end cap comes off, and the cocking channel is ready for the mounting of speakers and electronics.
I guess that's the reason why I cared so much... I wanted to help you out.
=================
the only thing I can add to this discussion, is that the plan I put up is the blaster builders club plan,
it was not created by "blastech" and on that plan the statement is made 18 3/8" long.
from billy's measure we get 18. so there must have been some welding work to put together the blaster
builders club Demill sterling. because billy is in the UK and he can have sterlings that have not
been cut up into pieces and then re-welded together.
this, and the printing variances some people get, can all cause a lot of confusion.