Single Shot Percussion by W. W. Marston & Knox - This is a bag handled single shot pistol in .36 caliber. the barrel is only 5 inches long, with the whole gun coming in at a bit over 9 inches in length. The half round half octagonal barrel is marked �W.W. MARSTON & KNOX / NEW YORK 1854� and also bears SN#883 on the underside. The grips show minor handling wear, and the metal on the gun is mostly in very good condition with some pitting near the hammer, nipple, and rear sight. Barrel is Rifled. Price is $300.00 OBO free shipping. Pay with Check-Money Order. No FFL needed as it is a antique Per my Research. I Have more pictures.