Faultless Pen Gun

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FAULTLESS PEN GUN FEDERAL LABORATORIES Makers of tear gas guns . Pittsburgh Pennsylvania . Number manufactured : Unknown — But Limited . Manufactured from 1925 to 1932.
MODEL	Pen Gun .
BARREL MARKING or FRAME MARKING	FAULTLESS USA ( on pocket clip ) or FED LAB. INC , PGH. PA. PAT. DEC.29TH. 1925 ( on side near clip on some models ) PAT NO. 1,772,656 ( found on end of firing pin on some models )
BARREL LENGTH	1 1/2 inches
CALIBER’S MANUFACTURED .	32 caliber ( muzzle restricted to 22 caliber ) 38 caliber (muzzle restricted to 25 caliber ) For tear gas cartridges only May be found in other calibers or gauges
BARREL CONFIGURATIONS	Round.
TYPE OF WOOD	None
TYPE OF TRIGGER	Ball bearing .
TYPE OF ACTION	Single shot .
TYPES OF METAL FINISH	Nickel over brass frame or Full blue
KIND OF SIGHTS	None
NUMBER OF GUNS MANUFACTURED	Unknown but limited .
NUMBER OF CARTRIDGES	One.
TYPE OF MAGAZINE AND LENGTH	None .
STANDARD ORDER FEATURES	Total lenght lenght 5 3/8 inches . 1/2 inch in diameter at largest place . Cocked by pulling knurled knob at end . Pocket clip coversball and acts as safety . Brass construction . Pocket clip gold plated when new.
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