Bushmaster Arm Pistol Full Auto Machine Gun

[ranger1385]

Gwinn Bushmaster Arm Pistol Full Auto Machine Gun 5.56 PDW - Machine Guns at GunBroker.com : 1049661820

 

Not mine and do not know the seller.  Looks interesting though.   I have been pondering the rifle.  

[fifthmdec]

Just ran into this post.

We purchased it. The seller stated that it was a factory conversion. I gather that he ment, Bushmaster. The markings are conducive to the first version out of Maine. 
I inspected the weapon upon receipt and there are no other manufacturer’s SOT markings. It is my understanding based on the information out there, that Bushmaster did convert a few to MGs. 
 

Interestingly, another seller on GB has listed their arm pistol as a factory conversion. It was not, Sendra was the  SOT on the receiver. Our Form3 lists Bushmaster. That may or may not be accurate. We’ve had a few MGs that the manufacturer listed was incorrect.

That being said, I filed a FOIA request for the weapon’s history. We’ve done this on most of our inventory over the years. Since, the supposed Bushmaster conversions have a date range. With no other SOT markings on the weapon, chances are favorable, that Bushmaster did the conversion. The date on the Form 2 should help place the entry into the NFRTR.

Well shall see…
 

[APEXgunparts]

APEX Gun Parts has some assemblies for the Bushmaster ARM pistol.

Search results for BUSHMASTER ARM Pistol

When we looked these parts up that is when I learned there was "early" and "late" types of parts.
I thought something on one of these that made me think it was a select fire assembly.
We sorted these years ago, so I am vague on the details.

Richard