My friend and former participant in the Yom Kippur War writes the following. Please note the LAST sentence... The concept is based on a rocket bullet or caseless bullet (the primer & propellant are contained within the projectile) . This has been in development for a long time. Back in 1957 the CONARC (Continental Army Command) set up a office based out of John's Hopkins Univ. and MIT to explore future TBPs (Tactical Battle Proceedures) MIT took on the the SPIW program (Special Purpose Individual Weapons) and John's Hopkins took on the ALCLAD ( a special study on developing better infantry body armour protection, but also much more a study through records of the 3 million casualties on frequency and distribution of wounds, their physiology etc, so field hospitals can identify lethality factors, how to better triage, but besides saving lives it also gave insights how to make fire control tactics more lethal to the enemy. In 1968 the SPIW program had reached the conclusion that the flechette ballistics (flechette ballistics is where the projectile has a built in ratio to unbalance rifling spin and convert it to yaw {a way to make the bullet tumble on reaching the target, thus converting all the bullets force into a broader surface volume}) was most optimal and Eugene Stoner's .223 caliber AR-15 (ARmalite-15) was seen by General Johnson to be the projector best suited for the Army's tactical missions. Thus the US military and NATO eventually adopted the 5.56 mm M-16. (or what North Bay makes under licence and known in Canada as the C-1, and C-2) By the 1970s two other programs were derived from the ALCLAD studies one became known as the SALVO (Small caliber's with controlled dispersion patterns) the other was the SAWS program.
It was in SALVO that Eugene Stoner came to develop the gyro-rocket munition and Benny Cirkus began to develop caseless ammunition which seems to be the type of munition Metal Storm is using in their projectors. Benny Cirkus, (my chaver Shimon used to work for him) lives in Kirat Arba. Benny is originally from Bruno Czechslovokia where he apprenticed as an Armourer first class in the Skoda Werk, he survived Auschwitz and came to the eretz where he worked as a special projects weapon maker for IMI, last time I saw Benny was in Montreal at Snowdon Deli in 1998. He had been in the states to negotiate a deal.
So sorry but most of the futuristic weapon system you see out there are all being made under an Israeli patent ;-). Kol tov... MZ