Shotgun stock with shell holder

Shotgun with adjustable ventilated sight rib

Shotgun with interchangeable magazine

Shotshell chamber

Shotshell size adapter

Shoulder arm with swivel breech member

Shoulder firearm recoil absorbing mechanism

Shoulder support element for a small arm

Shoulder-end attachment system for firearms

Shoulder-fired semi-automatic rifle

Shoulder-launched multiple-purpose assault weapon

Side hammer percussion lock

Side spring door action

Side-by-side cartridge magazine for cartridges

Side-by-side cartridge magazine for rim-fire cartridges

Side-by-side cartridge magazine for rim-fire cartridges

Sidearm convertible between knife and firearm

Sidearm mounting and locking apparatus

Sidehammer percussion action

Sight