dude, I wouldn't have that kind of attitude. People comment when they can. and No, no one has a stencil for sale. you will have to either make your own, or paint it on. I hope this helps.
The skull and bones looks like it's easy enough to draw yourself. It's a pretty basic looking design. I don't think a spartan laser is necessary for the release but that'd be cool to make one for your suit eventually. I suggest pepping the SMG in this thread. It's apparently a very easy build compared to other weapons