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Introduction

• Stinger^TM Pen Pistols by Stinger Mfg. Co.
• Stinger^TM Pen Pistols by R. J. Braverman
• Model 2 Stainless Steel "Pen" Pistol by American Derringer Corp.

The Stinger is the only "legal" pengun -- legal in that it considered an ordinary pistol by the ATF.  This is because it cannot fire till it is folded into the recognizable shape of a pistol.

So you want to but one?  Don't ask me!  Check the usual sources such as Gunbroker.com and GunsAmerica.com.