A fusible ring in a cartridge plug melts to release internal pressure before propellant ignition.
A blast attenuator redirects shock waves using a radiused structure and absorbs energy via shear thickening fluid in a porous foam core.
A dart pistol apparatus uses interchangeable mainsprings to adapt projectile launch force for varying player skill levels.
Rotating projectiles use onboard sensors to detect orientation and actuate steering surfaces, correcting trajectory deviations caused by mid-flight instability.
A throwing toy uses a flexible tab shaft to store spring energy during the throw.
An internal piston rod extends via firing gas pressure to cut air resistance, increasing ballistic coefficient and flight stability.