Israel has developed a cheap method of destruction of enemy personnel located inside buildings, in shelters or in the trenches. Israeli solution, which has the title of MPRS (Multi-Purpose Rifle System — multi-purpose rifle system), is a device weighing 750 grams, which is attached to the top plate rifle (like an optical sight). MPRS has another mount for 40-mm grenade launcher grenade launchers like ordinary rifles. With the cable data is transferred to the special 40-mm grenades, programming them to burst at the moment (inside the room, behind a wall, etc.). MPRS, in principle, is a daunting sight with laser rangefinder, a computer and automatic targeting system. Selects the target and the shooter presses the button, a laser rangefinder determines the distance to the target, and then programs the MPRS 40mm grenade, which is then fired. With MPRS can get 40-mm grenade through the window at a distance of 100 meters. Unmanaged 40-mm grenade own range of about 400 meters, but a clear fire at great distances likely only MPRS. Explosion 40-mm grenade kills at a distance of 5 meters and wound at a distance of 10 meters and more than. «Smart» 40mm grenades are least $ 50 any.
MPRS least worth $ 10,000, which is much cheaper than other solutions, XM25 $ 30,000. In addition, XM25 is languid instrument (5.5 kg). 25mm grenades weigh 270 grams any. On the other hand, already has a 25 mm armor-piercing grenades (shaped charge capable of punching a 50-mm armor). This allows XM25 hitting light armored vehicles. Moreover, there are new versions of 25mm grenades big bang (or «thermobaric»). This can cause a powerful grenade explosion effect in a confined space and in fact absorb a large part of the oxygen out of a cave or closed room for quite a long clearance time, so there would not survive enemy fighters or, in at least were not combat-ready. This gives the attacking forces to break into the room and kill or capture the enemy. In combat, every little advantage is crucial. When using the XM25 refuge behind some rocks, trees, walls or even in caves no longer able to guarantee protection. There are also prickly grenades. In the shop placed four grenades average price of $ 35 any. XM25 with quadruple thermal sight is worth about $ 30,000.
Israel produces special 40mm grenade with the same abilities as the grenade XM25, and the United States Marine Corps, who always finds a method to save money (which they do not always enough), is considering buying MPRS. This makes sense because each department has at least one of the last fighter with a grenade launcher 40 mm, weighing 540 grams which is not always needed in battle. But there are situations when it is really needed. Same thing with the XM25, but this thing weighs 5.5 kg and can only shoot 25mm grenades. SMG MPRS and grenade launcher M203 weighing 1.4 kg is installed on its own assault rifle M4 weighing 3.4 kg is also able to carry MPRS weighing 750 grams and a certain number of 540-gram and 40-mm grenades smart. As required fighter with MPRS has equivalent XM25, but weighing 5.3 kg and can also shoot ordinary grenades, not to mention ordinary rifle M4/M16. This intrigued the U.S. Marines, and many other ground troops.