mattclase

I'm no expert, but its a very vague statement.

Certain firearms like short-barrel rifles (SBR), suppressors, calibers > 50, and machine guns require an ATF license. That said - these aren't hard to come by. Many people file multiple ATF form 4's (with a $200 tax) to acquire suppressors, machine guns, and SBR's. 8 is nothing special, you'll see people on r/guns with more.

The tl;dr is if you have the mone and time and clear background, its not hard.

One thing to keep in mind is for SIMD memory locality is very important; a diagonal vector with a standard 2D DP grid is gonna lead to a lot of cache misses. Just something else to learn about.

Here's another recent SIMD aligner if you're interested:

https://github.com/langmead-lab/vargas