kurtmax, the part ALONE is considered the machine gun. And, if you have one of those, AND you have a Glock handgun, even though it is not installed, you have a machine gun.
To the original poster:
Can you carry an AOW/SBR/SBS/full auto in your State? I don't know. I have no idea what the law in CO is concerning this.
But, let's say that you DO carry one. And you DO have to shoot someone. Your troubles might well be many and often--ESPECIALLY if the firearm used is a SBS.
The media will crucify you. The cops might look upon you with a jaundiced eye--and in the civil suit that WILL follow, you will be drawn and quartered, because someone carrying one of those is just LOOKING to kill someone.
At least, that's what the commentary will be.
Does this make sense?
And, all the rhetoric spouting, firebreating defenders of your RAHTS, and all the rabid no-compromise posters on this and other RKBA boards won't be there--and won't put one PENNY toward your defense, when all that you have earned and all that you WILL earn in your life is on the line--because little Tommy Thug's heartbroken mother is on the stand, telling the jury in the tort case how little Tommy had been almost cut in half by that mean man's shotgun--why, he WANTED to kill someone, that's why carried it!!!!!
I hope you get my point here, friend. This is reality talking.