I recently purchased some blue prints from ebay for the Walther P38, drawings etc were good, possibly reproduced a few times but all the info was there.

Not wanting to produce one in 9mm, but was looking at trying to produce a drawing of it in .22 with a 12" barrel and brace as to comply with our laws.

The weapons guild, I frequent now and again, it does have a lot of info, but there some projects I see that make me cringe, and as for safety.......