The Yankee Boogle

As if that were all you needed.
That is all you need, drop in auto sears in one form or another have been around for a very long time. Also been known to break a lot of rules if you put one in...
 
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Most AR's would just need a new trigger group and selector. Could be had before the sun went down. The problems with this are:
A. Illegal. Really, it's fucking stupid; don't do it.
B. If disregarding the law, why use some 3D printed POS that will come apart and lock up the rifle in short order. Real sears are readily available. DWG files of DIAS's are readily available. If you are determined to be a fed felon, at least do it right.
 
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