List via The Blaze:
- Olympic Arms, Inc
- La Rue Tactical
- EFI, LLC – Extreme Firepower
- York Arms
- Templar Custom
- Cheaper Than Dirt
- Bullwater Enterprises
- Westfork Armory
- Smith Enterprise
- Alex Arms
- Spike’s Tactical
- Quality Arms
- Liberty Suppressors
- Doublestar Corp
- American Spirit Arms
- Trident Armory
- Head Down Products
- J&G Sales