This is a work in progress.
I have not had a chance to print it. There may be a new model in a few weeks when I get the chance to print and edit it. If you do decide to print it please let me know what is wrong and what can be improved. I also am working on a possible stock for the hammershot so,when used with the barrel attachment, it looks like a rifle. Will post it when I feel comfortable with the design.
Let me know in the comments if you want me to make a stock attachment adapter?
Special thanks to dupisha, and Mickstar416 for telling me the faults in my design so far. Go check out a remix of an older version of my design made to fit flash hiders by dupisha at: http://www.thingiverse.com/thing:1175350
New in this update: I fixed a problem pointed out by dupisha, and added a sight to the front for reasons.
New in this update: I fixed a problem pointed out by Mickstar416, aligning the barrel to help performance.