After reading 922r I would say we are either governed by total idiots or extremely cunning people with evil intentions who devise meaningless regulations to trip up otherwise law abiding citizens and turn them into criminals. Does a person's mental attitude change into that of a killer when the 10th imported part is added to a rifle. Will he remain a responsible citizen with no desire to kill a human being with only 8 added imported parts. How does having the same 10 parts but American made stop the desire to kill and keep us all safe.
MI Powdercoater, here is something I found which makes me pretty sure I am totally OK on this. It is a letter from the ATF to the NRA concerning what modifications can and can not be made to the SKS. I won't paste the whole letter, but the part that is pertinent here.
"Some guidance can be gleaned from a letter to the NRA from ATF Technology Branch, printed in the NRA magazine, American Rifleman May, 1994. It specifically mentions the following the following modifications of an standard SKS Carbine would not be violations of Title 18 USC § 922(r):
1. Replace the existing stock and handguard with a non-folding wooden or synthetic stock having either a Monte Carlo or thumbhole design.
[See the discussion of pistol grips and thumbhole stocks.]
2. Attach a muzzle mounted recoil compensator, provided that the device is not also designed as a flash suppressor.
3. Replace the existing 10 round magazine with a fixed 5 round magazine or install a block in the well of the 10 round fixed magazine to limit its capacity to 5 rounds....."
I added the bold, as that is exactly the modification made to the rifle in the video. But yeah, the law is insanely confusing.