Modern Sub Machine Carbine submachine gun

The Modern Sub Machine Carbine / MSMC submachine gun was born from the INSAS (Indian Small Arms System) program, which originally included three weapons - the 5.56mm INSAS assault rifle, the 5.56mm INSAS squad automatic / LMG, based on the rifle, and a compact carbine. The INSAS rifle and LMG are already in service with Indian armed forces, but the original INSAS carbine program faced several difficulties. As a result, it was decided to design a carbine around smaller round, based on the shortened 5.56mm cartridge. The new round appears to be of same concept that experimental American Colt MARS, as it has bottlenecked case 30mm long, loaded with light, pointed bullet with steel penetrator core. The bullet weight is 2.6 gram and muzzle velocity from 300mm carbine barrel is listed as 650 m/s, resulting in muzzle energy value of 550 Joules - similar to modern pistol cartridges. The cartridge, known as 5.56x30 MINSAS, offers effective range of about 200 to 300 meters, with good penetration against body armor. The early carbines for this round, known as MINSAS, were based on the INSAS rifle, lightened and scaled down for shortened round. The MSMC, however, derives from this by having more compact, pistol-type layout, which also offers better balance and better maneuverability, especially in confined spaces.
The Modern Sub Machine Carbine / MSMC submachine gun is intended for Indian Special Operation troops, but it also can make a good Personal Defense Weapon for vehicle and gun crews and other non-infantry personnel operating in combat zones. As of now (spring 2010), the Modern Sub Machine Carbine / MSMC submachine gun is in its final stages of T&E by Indian military.
The Modern Sub Machine Carbine / MSMC submachine gun is a gas operated weapon, utilizing rotary bolt locking and a gas piston, located above the barrel. The receiver appears to be made from sheet steel, with outer polymer housing with integral pistol grip. The magazines are inserted into the pistol grip. Buttstock is of telescoped type. Safety / fire mode selector is ambidextrous and conveniently located above the trigger. Standard iron sights are complemented by the Picatinny rail, which can host a wide array of additional day and night sighting equipment. Another unusual accessory for the Modern Sub Machine Carbine / MSMC submachine gun is the bayonet lug, which is located above the barrel, just in front of the receiver.

History
The MSMC originates from a project to develop a carbine weapon based on the INSAS rifle. An INSAS carbine did not materialize, however, as the powerful rounds used in the INSAS rifle created excessive recoil for the smaller carbine. It was decided to develop a new lightweight carbine that can fit the requirement of various Indian security forces. The first trial was held in June 2006, another in late 2007 and finally one in January 2009. The MSMC was showcased during the defense exhibition Defexpo 2010. The weapon underwent further trials between April and June 2010. Among its major competitors is the IMI Tavor TAR-21, which is in service with some Indian special forces units including the MARCOS and the Garud Commando Force.
There had been numerous delays in testing the MSMC for Indian Army trials, mostly due to the unclear requirements needed. The final version was provided to the Indian army for trials in August 2011 and the tests are supposed to last 7–8 months before induction into service.

Design
Following design from machine pistols like the Uzi, the MSMC has a pistol grip which allows the user to fire it even with one hand. This allows the insertion of 30-round MSMC magazines on the pistol grip. It has a retractable buttstock and ambidextrous cocking levers on both sides of the MSMC, alongside the fire selectors to suit individuals who prefer to fire the weapon from either the left or right shoulder located above the trigger.It has a picatinny railing on the receiver to allow the installations of weapon sights like reflex and red dot sights with iron sights built into the railing. The weapon fires in a gas operated mode, utilizing rotary bolt locking and a gas piston.
Like the Uzi, the MSMC is made up of stamped sheet metal while having polymer housing. An unusual element in the design is the placement of the bayonet lug, located above the barrel just at the front of the receiver

Specifications
Weight 2.98 kg empty
Length 500 mm Closed Stock / 700 mm Open Stock
Barrel length 300 mm
Cartridge 5.56×30mm MINSAS
Caliber 5.56mm
Action Gas Operated
Rate of fire 700-750 RPM[1]
Effective range 200-300 m
Feed system 30 round grip-inserted box magazine
Sights Picatinny railing built into upper receiver to allow placing on various day/night sights. Iron sights built into receiver.