Removable bulletproof apparatus for vehicles

Removable external payload carrier for aircraft

Removal tool for propelling charge modules

Renewable liquid investment seal

Repeating firearm

Repeating firearm trigger mechanism

Repeating firing system for guns

Repeating weapon actuating spring and guide

Repetitive high-current opening switch for railguns

Repetitive resonant railgun power supply

Rescue vehicle

Resettable separation nut with a low level of induced shock

Residue-accommodation means for a gas-operated gun

Resilient high modulus polyurethane elastomer

Resonance damage process

Resonance in electromagnetic launchers

Retainer for securing a silencer on barrel of handgun

Retractable blast pressure and flash suppressor assembly for gun

Retractable underwater turret

Retro-fit gas system for controlling the firing rate of the Colt