Add Navy Arms, MDM, Ruger, Mossberg, Browning, Ithaca and
many many custom, semi-custom and kit builders that do percussion and Flintlocks.

Muzzleloading weapons list (mostly traditional styled): From Muzzleloadingforum.com
Austin & Halleck
Arts and Arms, Ltd.
Blue Grouse Black Powder
Cannon Mania
W.G. Shipman: Gunmaker
Blackhart Longarms
Cabin Creek
Caywood Gunmakers
Cherry's Fine Guns
Chuck Edwards Longrifles
Clear Creek Trading
Cochise Muzzleloaders
Colonial Gun Works
Connecticut Valley Arms
Custom Muzzleloader Works (T. A. Brown)
Custom Muzzleloaders (birddog6)
Davide Pedersoli & C.
Early Rustic Arms
Fox Ridge Outfitters
J Brown Gunmaker
Jim Chambers Flintlocks, Ltd
Gobbler Knob Longrifles
Knight Rifles
Loyalist Arms & Repairs
Lyman Products (all Lyman products and firearms)
Middlesex Village Trading Companie
Military Heritage
Muzzleloading and More
Narragansett Armes
Navy Arms
North Star West
Pirates Cove Arms
Recreating History
Ryan McNabb Longrifles
Tennessee Valley Muzzleloading
The Gun Works
The Rifle Shoppe
Thompson / Center Arms
Traditions™ Performance Firearms
White Rifles