Between one thousand and fifteen hundred Half Stock Sporting rifles were manufactured circa 1857 to 1864. Most were made in .36 and .44 caliber with a few manufactured in .40 and .50 caliber.

The barrel address on the top-strap reads “COLT'S PT./1856 and ADDRESS COL. COLT/HARTFORD CT. U.S.A.”. The walnut stocks are varnished or oil finished with metal parts blued with case-colored hammer and lever.

This model has a six shot fluted cylinder and a round barrel which is semi-octagonal at the breech end. The standard rifled barrel lengths are 24, 27 and 30 inches. There are some special variations with regards to trigger-guards, sights, frames and adjustable set triggers. There are some great examples of engraved and presentation pieces known.

The serial numbering for this model is rather complicated and it is advisable to check out specialist information to date these longarms and put them in the right category.

For in-depth reference on Colt Model 1855 Root Revolving rifles, carbines and shotguns see ‘The Book of Colt Firearms- 3rd Edition’ by R.L. Wilson or ‘Colt Rifles & Muskets from 1847 to 1870’ by Herbert G. Houze. For values, check out ‘Flayderman’s Guide to Antique American Firearms… and their values’ by Norm Flayderman.