i just came uf with this conversion while looking at other shotgun conversion and while looking at the Forgeworld shotgun conversion set
Things you need...
5 one handed lasguns and 5 armless lasguns
Sheet styreen or plastic card
1.cut the top sight off of one of the one handed lasgun, make it flush with the front of the gun.
2.cut off the lasguns muzzel.
3.cut off the battery on the lasgun(just cut the powerpack).
4.cut a piece of plastic 2.00mm x 14.5mm and glue to the top of the lasgun.
5.cut a strip 2.10mm x 7.10mm and cut a notch at one end, this part goes behind the eagle emblem on the side facing away from the guardsman.
6.cut a small square to fit into the notch loosly and glue it into the notch.
7.on the side facing towards the guardsman cut a strip 2.10mm x 14.00mm, place the strip on the gun by lining it up with the end of the gun then cut an ejector slot in the strip 8.00
mm from the muzzel end of the gun(I found it eaiser to just cut all the way through the bottom to make the slot then add a very small strip to close the bottom of the port).
8.cut a square 3.00mm x 3.50mm and glue it where the lasgun powerpack used to be.
9.cut off the rear stock of the armless lasgun and glue it to the bottom of the lazergun in front of the old powerpack.
10.add sights to the top of the gun as desired.
note: yes, i got the picture of the finished gun up!
If you have any questions about this, ask and i will answer asap.