Firearm Appraisers;
Gun Appraisals: Get an expert's opinion on the value of any black powder gun.

Manufacturers;
Barrels
Green Mountain: Manufactures very accurate black powder gun barrels.
Rice Barrels: Match grade and benchrest quality muzzleloader barrels.
Cannons
Diamondback Cannons: Manufactures the M45-G/2 black powder cannon.
Firearms
Austin & Halleck: Manufactures black powder rifles.
Colt: Manufactures black powder handguns, rifles & shotguns.
CVA: Manufactures black powder handguns, rifles & shotguns.
Knight: Manufactures black powder rifles.
Lyman: Manufactures black powder handguns & rifles.
Marlin: Manufactures black powder rifles.
Remington: Manufactures black powder rifles.
Savage: Manufactures black powder rifles.
Thompson Center: Manufactures black powder rifles & shotguns.
Traditions: Manufactures black powder handguns, rifles & shotguns.
Ultimate Firearms, Inc.: Manufactures the powerful BP Xpress muzzleloading rifle.
Gun Stocks
Gunstocks Plus: Premium muzzleloader wood products plus carving service.
Harrison Gun Stocks: Muzzleloader gun stock blanks to finished rifles.
Parts / Various
TDC Manufacturing: Manufactures quality cappers plus copper and brass gun parts.
Powder
American: Manufactures american pioneer powder in FF, FFF and stick.
Elephant: Manufactures black powder and imports Swiss black powder.
Goex: Manufactures black powder and Pinnacle powder.
Hodgdon: Manufactures Pyrodex and Triple Seven powder.
MAGKOR: Manufactures BlackMag3 powder.
Projectile
Barnes: Manufactures sabots and bullets.
Hornady: Manufactures swaged lead round ball, sabots and bullets.
Nosler: Manufactures sabots and muzzleloader partition bullets.
PowerBeltBullet: Manufactures Power Belt bullets.
Precision Rifle: Manufactures very accurate muzzleloader bullets.
Speer: Manufactures swaged lead round ball.
Sidelocks
Jim Chambers: Manufactures formerly Siler locks in sixteen different sidelocks.

Various Informational Links;
Civil War Artillery: Historically correct information, excellent educational web-site.
Artillery Through The Ages: Historically correct information for American artillery.