Normally US made mags for 922r compliance have 3 US made parts (body, floorplate, and follower), but you list only 2 under 922r value.

https://hkparts.net/product/30-round...p5k-p17250.htm

Since the description mentions a US body and floorplate, I’m guessing that the follower is foreign made. Who makes it? Is it a factory German follower?