This is the most inconspicuous conceal carry weapon ever. You can take it out and nobody will ever know that it is a weapon.
Envelope is Nicer than the plans
Very nice envelope freaks out your guests just laying on the coffee table but if you'll attempt to build it you'll kill yourself
See it in the next 007 flick!
...Just kidding about the title. These are pretty neat plans to build a .22 pistol disguised as a cigarette lighter. Caveat: I'm not sure of the current legality of building one without registering it with the BATFE as an AOW.