UPDATE #2: Feb 29th
OK, I figured out how I wanted to attach the stock. I'm using screw posts, similar to the T-bolt method for securing the helmet visor. 
I got some aluminum screw posts from the hardware store (Note: for those of you in the U.K., these are made of aluminium 
) and some button head hex screws to attach the stock to the bracket. It's a pretty nice pressure fit to begin with, but the screws will make it nice and secure.
I started by using a 1/2" Forstner bit to bore out 2 depressions in the stock. I held the stock in place on the blaster and used a mechanical pencil to mark where the holes should go beforehand.
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Here are the screw posts and button head screws I'm using. (The screw heads will be painted 
)
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I used an X-acto blade to scrape up the flat bottoms of each depression, and sanded the flat parts of the screw posts to give my epoxy a nice rough surface to adhere to.
I used some JB Kwik and "buttered" each screw post, slightly twisting them into each depression in the stock, ensuring the epoxy flowed up forming a lip over each screw post.
I then held it in place on the blaster for 3 or 4 minutes while the epoxy kicked. This made sure they were exactly where I wanted them to be.
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And here are the screw posts, post-epoxy.
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I'll give them the recommended 4 to 5 hours to fully cure, then either later tonight or tomorrow I'll begin painting the stock.
I plan to use the wood graining tutorial from the Sci-Fire website.
If you haven't seen it, it can be found here: http://sci-fire.com/how_to_wood_grain.htm
