Patent US20210341276A1 issued Jun 28. In its text, published by the USPTO, is sufficient information to produce and load a variant of homemade 9mm Dagny Dagger armor-piercing projectiles
Patent US20210341276A1 issued Jun 28. In its text, published by the USPTO, is sufficient information to produce and load a variant of homemade 9mm Dagny Dagger armor-piercing projectiles