Grenades

German defense company Rheinmetall has unveiled a new rectangular, pocket-sized stun grenade for military and law enforcement. About the size of a smartphone, it's also designed to be easily concealable for undercover agents or bodyguards.

​As last month's grounding of flights at Gatwick Airport showed us, drones can cause a lot of problems – and they can even pose a security risk – when they're flown in the wrong places. Engineers with the US Army are developing a countermeasure, in the form of a drone-netting grenade.

The Soldier Parachute Aerial Reconnaissance Camera System (SPARCS) built by Singapore-based ST Engineering replaces a warhead with a CMOS camera sending back real-time images to a computerized receiver; turning disaster teams, police, and foot soldiers into recon units.

The transparency grenade makes collecting and transmitting information from an area as easy as pulling the pin.

February 4, 2009 Defence technology specialist Metal Storm has successfully certified its semi-automatic 3GL grenade launcher as a safe shoulder-fired weapon. M