Brands
- SGM Tactical
- Shadow Systems
- Sharps Bros
- Shell Sorter
- Shield Arms
- Shooter's World
- Sierra
- Sierra Ammo
- Sig Sauer
- Silencer Inc
- SilencerCo
- SK Ammo
- Smith & Wesson
- Sonicore
- Sons of Liberty Gun Works
- Speer
- Spike's Tactical
- Springfield Armory
- St Marks
- Staccato
- Stag Arms
- Standard Manufacturing
- Starline
- Stars and Stripes
- Stealth Operator Holster
- Sterling
- Stevens
- Steyr Arms
- Stoeger
- Streamlight
- Surefire
- Swift
- Tactical Solutions
- Talley
- Tanfoglio
- Taser
- TAURUS
- Taylors & Company
- TelaAmmo
- Texas Silencer Company
- Thompson
- Thunder Beast
- Tikka
- Tisas
- Trailblazer Firearms
- Trijicon
- TriStar
- True Precision
- TruGlo
- TulAmmo