- Accu-Tek
- Adaptive Tactical
- American Classic
- American Tactical Imports
- Anderson Manufacturing
- Ares Defense
- ArmaLite
- Arsenal
- Barrett
- Beretta
- Bersa
- Bond Arms
- Browning
- Bushmaster
- Calico
- Chappa Firearms
- Charter Arms
- Chiappa Firearms
- Chipmunk
- Cimarron Firearms
- Citadel
- CMMG Inc
- Cobra Enterprises
- Colt
- Comanche
- Core 15
- CVA
- CZ-USA
- Dan Wesson
- Daniel Defense
- Del-Ton
- DiamondBack
- Double Tap Defense
- DPMS/Panther Arms
- EAA
- Escort
- Excel Arms
- Excel Industries
- Fausti
- FMK Firearms
- FNH USA
- German Sport Guns
- Gibbs Rifle
- Glock
- H&R
- Henry
- Heritage
- Hi-Point
- HK
- Howa
- I.O. Inc
- ISSC
- Ithaca
- IWI USA
- Just Right Carbines
- Kahr Arms
- Kel-Tec
- Keystone (Cricket)
- Keystone Sporting Arms
- Kimber
- Liberty International Arms
- Lyman
- M+M
- Magnum Research
- Marlin
- MasterPiece Arms
- Maverick
- Metro Arms
- Mossberg
- New England Arms
- North American Arms
- Palmetto State Armory
- PARA
- Phoenix Arms
- PTR 91
- Puma
- Remington
- Rock Island Armory
- Rossi
- Ruger
- Russian American Armory
- Savage
- SCCY Industries
- Sig Sauer
- Smith & Wesson
- Springfield
- SPS
- Stag Arms
- Stevens
- STI International
- Stormlake Barrels
- Taurus
- Taylor’s & Co
- Thompson
- Thompson Center
- Traditions
- TriStar
- Troy Industries
- Walther
- Weatherby
- Webley & Scott
- Winchester
- Windham Weaponary
- Stack-On Safes
