Also known as the "Side Lever Hall", Simeon North manufactured approximately 10,500 of these carbines between 1844 and 1855. The top of the breechblock is marked "U.S./S.NORTH/MIDLtn/CONN./1846", there is a "GWH" on the right side of the breech end of the barrel, a faint cartouche on the left stock flat. The carbine has the breechblock thumb lever on the right side of the receiver and extended sling bar and ring on the opposite side. Button head iron cleaning rod and mounted with a smooth one-piece full straight grip stock, secured by two barrel bands and smooth flat iron buttplate.

Period refurbished. The barrel bands, trigger guard, and breech retain half of the dull arsenal style blue finish with the remaining metal surfaces having a mottled brown-gray patina. There is pitting overall. The stock is fair with a faint cartouche, a repair on the forearm, a couple hairline cracks, and some minor handling marks. Mechanically fine.