Ruh roh. Time to slam the door shut. Another horse has just exited the equine boarding facility. Reader Travis writes that, “the ‘Shuty’, named after the ‘Luty’ submachine gun design, uses a reinforced, printed AR 15 lower and a Luty inspired upper, to make a 9mm semi-auto pistol. It is designed to use a Glock or similar barrel. They may also switch to a metal bolt. So it’s not fully printed, but still.” Seems the viral aspect of gun printing has, well, gone viral. Here’s what someone calling himself shadowfall posted this at the defcad.org site . . .
I finished this design the other day and gave a copy to #defcad. You should join us in the chatroom if you aren’t already there.
This is a fully semi-auto 9mm upper designed for the ar-15 lower. I borrowed many of the concepts from Philip A. Luty’s “Expedient Homemade Firearms, The 9mm SMG”. Mr. Luty is no longer with us but I recommend anyone that is able to purchase his book off amazon for $12 http://www.amazon.com/Expedient-Homemade-Firearms-The-Submachine/dp/0873649834/ref=sr_1_1?ie=UTF8&qid=1368782832&sr=8-1&keywords=expedient+homemade+firearms. The proceeds help his family and assist in keeping the sitehttp://thehomegunsmith.com/ online. If you cannot afford his book, volume 2 is available online for free.
The Shuty will work with the Defense Distributed v5 Lower and all renders are based on that. If it is placed on a standard ar lower, it will stick out a bit on the sides. A glock barrel or similar is required as plastic will not have the required tensile strength to withstand the chamber pressures. The bolt is in beta and may change in the next few days as I am still working on a decision for the final firing pin. If you plan on printing this design, I recommend doing that last.
Bolt BOM:
2x m3x40 bolts
2x m3 nuts (nylock preferred)
1x m3x20 bolt (for ejector)
1x m3x50 bolt (charging handle)
v1 source files: http://sendfiles.org/sJoYv
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