I would start here. It may answer some or most of your questions.
http://www.hr1871.com/Support/accessoryProgram.aspBarrel Accessory Program
If you have any questions about the barrel accessory program or need to obtain the age of your firearm, or availability please have your firearm serial number ready and please call 1-866-776-9292 prior to shipping your firearm. Prices and barrel selection subject to change without notice.
Important Information Please Review before continuing
Additional barrels may be added to firearms of our manufacture since 1987 only, with a serial number that begins with N, H or CB. We do not install additional barrels on any other manufacturer’s firearms.
Additional barrels will be fitted to the proper frame if the frame passes a detailed inspection. This inspection is performed by the repairman at the time the frame is received.
Rifle barrels may be added to firearms manufactured since 1999 and only to frames (SB-2) that originated as a rifle, if frame passes inspection.
Rifle frames (SB-2) newer than 1999 may be fitted with additional rifle, shotgun, and muzzleloader barrels, if frame passes inspection.
All shotgun frames (SB-1) and rifle frames (SB-2) produced between 1987 and 1999 may be fitted with additional shotgun and muzzleloader barrels only, if frame passes inspection.
Muzzleloader frames can only be re-fitted with muzzleloader barrels only.
Rimfire frames (SS-1) can only be fitted with rimfire calibers.
10 gauge shotguns and the 12 gauge Ultra Slug Hunter with the heavy rifled barrel can only be fitted with other 10 gauge or 12 gauge Ultra Slug Hunter barrels only.
We do not sell additional barrels outright. All barrels must be factory fitted.
We do not sell barrel blanks or do custom calibers/barrel lengths/finishes/sights.
Additional barrels are available as additional barrels only. We will not exchange barrels for existing barrels on shotguns and rifles, as it will change the model.
In order to obtain an additional barrel(s), the stock, forend and frame (receiver) must be sent to us so that they may be properly hand-fitted to the barrel, to be sure they are correctly head-spaced and proof-tested.
Hammer Spurs are Sold Separately from Barrel
To obtain an additional barrel(s), please take the following steps:
Open the firearm by pressing the release lever, and be sure the chamber is empty.
Remove the forend screw and forend.
With firearm fully open, lift the barrel off the hinge.
Carefully package the stock, forend and frame (receiver) for shipping. (DO NOT SHIP YOUR EXISTING BARREL.) Send by U.S. Mail or U.P.S. insured to the following address (DO NOT MARK THE NATURE OF THE CONTENTS ON THE OUTSIDE OF SHIPPING CARTON):
H&R 1871, LLC
ATTN: Barrel Accessory Offer
14 Hoefler Ave
Ilion, NY 13357
Enclose with your parts, credit card information or check/money order payable to H&R 1871, LLC (no cash accepted) along with the completed order form that you can download below.
Please include the serial number of your firearm, your name, physical address (no P.O. Boxes accepted) and your daytime telephone number.
Keep a record of the serial number of the returned firearm.
All prices are in U.S. funds and are subject to change without notice.
Due to licensing requirements, this offer is only available to U.S. residents.
During periods of high demand, please allow six to eight weeks for delivery of your additional barrels or accessories if the parts are in stock. Installation time may vary depending upon service demands. Backorder times will vary.
Shotgun Barrels
These barrels will fit most SB-1 and SB-2 frames newer than 1987. Refer to “Important Information” above to see if your firearm frame will qualify. All barrels are blue finish only. All barrels are 3” chamber, smooth-bore and bead sight barrels unless otherwise noted. The choke designation and length will be noted per barrel listing. Any special characteristics will be noted. For screw-in choke models the choke tube is sold separately.
Description
Part Number
Price
12 Ga 22” Mod
F150
$55.00
12 Ga 28” Full
FB010
$55.00
12 Ga 28” Mod
FB011
$55.00
12 Ga 24” Full
FT10
$55.00
12 Ga 32” Full
F932
$75.00
12 Ga 28” Vent-Rib, Screw-in Choke Tube (Sold Separately)
FS03213
$85.00
12 Ga 24” Fully Rifled, Rifled Sights
FB014
$75.00
12 Ga 24” 3 ½” Chamber, Screw-in Choke Tube (Sold Separately)
FT98
$75.00
12 Ga 28” 3 ½” Chamber, Screw-in Choke Tube (Sold Separately)
FG98
$75.00
20 Ga 22” Mod
F250
$55.00
20 Ga 26” Full
FB020
$55.00
20 Ga 26” Mod
FB021
$55.00
20 Ga 28” Vent-Rib, Screw-in Choke (Sold Separately)
FS03344
$85.00
20 Ga 24” Fully-Rifled, Rifle Sights
FB024
$75.00
20 Ga 24” Fully-Rifled, Scope Rail and special forend required for this model included.
F920
$114.00
28 Ga 22” Mod
F888
$55.00
28 Ga 26” Mod
FB028
$55.00
.410 Bore 22” Full
F450
$55.00
.410 Bore 26” Full
FB041
$55.00
.410/45 Colt 20” Mod
F41C
$96.00
Click for an order form