fits between the adjustment block and whichever base mount you choose.. Slides runs along the top
LBRY Tags: quick; scope; rail; 3d; 2a
More truly DIY designs that use non gun parts. This future-proofs against tyrannical legislation. As mentioned by an earlier poster, hybrid designs with a bit of metal work/reinforcing for longevity. I still think truly DIY designs in 9mm and 5.56mm are the holy grail, to go with 12g and 22lr. The most common, accessible calibres in other words.
He does 2 rails down, and then 2 more. Right before engraving some bullet casings.
Generally, things don't become a crime retroactively. If the making wasn't a crime at the time, new laws can't change that.
You may not be allowed to continue to possess things that you already made, but they aren't going to come looking for you unless you do something to draw that attention. At that point whether you bought rails doesn't matter. You're either in possession of a prohibited firearm or you're not.