So.. "any alteration", scrubbed or not, any deviation or physical modification from the original SKS45 design, and its commercial.
Now, the model that has the latch removable bayonet.. as close as it is to the standard SKS, technically it is also... altered, so it would be a commercial, correct?
If it adheres to the standard SKS45 design, stamped receiver and all of the oddities, but not scrubbed it's surplus, as in military grade..
1) I think if the gun is scrubbed it becomes a commercial variant, even if nothing else is done to it regardless of what it started life as. The receiver S/N changing is a clear indication that the firearm's old life has ended and a new one has begun.
Now this one I find interesting, the grey area has worked it's way to the top, Like he says, if it were serial OU812 in one life, they grind some, reblue, do a little fluff and buff and now it's serial BR549, something caused that, it technically is different. Because scrubbing by most nations usually means it more or less was repurposed, the scrubbing of Nazi K98s by Romania, Yugoslavia and Russia, the scrubbing of Russian Mosins by Finland. It's kind of along those lines, scrubbed, rebuilt, even reserialed and remarked for a purpose. This purpose could be anything from normal use in new hands to war reparations. And it seems these were mostly later rifles China did this to, so were they scrubbed, rebuilt and repurposed for commercial sale, had they quit using the SKS by this time. Was the scrubbing kind of a de-mil process to get in under a law somewhere, strip the military style aura away, suddenly it becomes a sterile quasimodo commercial sporter rifle. Maybe for China, they had simply become goods for sale to the American consumer or who ever had the fundage for purchase. It was all about the income, they obviously sold weaponry world wide and had no issues selling to anyone who was in the market for weapons buying in the 80's and 90's.