Kia Ora!
It looks good bro.
One issue is where the scope now sits. Where it is at the moment is in front of the mechanism for the lasgun and is consequently obscured from "line of sight".
If you make another though you should cut the mount and scope free from the sniper rifle, then cut off the barrel and silencer/suppressor. Then, on the lasgun cut off the front (as you did originally) and leave the mechanism in tact on the top of the gun, but file down a patch near the bolt on the back of the lasgun to mount the scope on. Once that's mounted bang the barrel and silencer on the front. It should give a better feel for balance.
Also, soak those puppies in acetone and scrub them back to metal before making mods, as paint and glue is bad mojo for green stuff and other puttys.
Keep up the good work!
Note: As for the sniper cloak, there are some simpler solutions - like the gauss bandage ghili suit, which you could build on top of a painted figure. But if you want to build a cloak your best of stripping the paint and starting from point dot.