All S Brands
- Sabre
- Safariland
- Sako
- Salient Arms International
- Samson Manufacturing
- San Tan Tactical
- Savage Arms
- SB Tactical
- SCALARWORKS
- SDS Imports
- Seekins Precision
- Sellier and Bellot
- SGM Tactical
- Sharps Bros
- Shield Arms
- Shimano
- Sierra
- Sig Sauer
- SilencerCo
- SiOnyx
- Smith and Wesson
- SnapSafe
- Sons of Liberty Gun Works
- Speer
- Spikes Tactical
- Springfield Armory
- Spuhr
- Squared Away Customs
- Stag Arms
- Standard Manufacturing Company
- Starline Brass
- Statement Defense
- Stealth Gear USA
- Steiner Optics
- Steyr Arms
- Sticky Holsters
- Stoeger
- Streamlight
- Strike Industries
- STV Technology
- SureFire
- Syndicate
