What was the purpose behind developing M4 rifle ?”
The story of the Special Purpose Rifle (SPR) starts with the USSOCOM’s Enhanced Carbine Program, from which the SPR was born. In October 2000, the U.S. Special Operations Command (USSOCOM) issued a Summary of System Descriptions, and in particular, SOPMOD Block 2 and 3 Systems. The USSOCOM includes the U.S. Army Special Forces, U.S. Navy SEALs, Airborne Rangers and U.S. Air Force elements. Officially called the Special Operations Peculiar Modification Program (SOPMOD), the program centers around what is called the Enhanced Carbine, a project that encompasses an extensive list of requirements for the main battle rifle (MBR) of the future. These requirements are listed in what is called the SOPMOD Upgrade Block II. The SOPMOD Upgrade Block II Consisting of modifications and improvements to the M4A1 carbine, SOPMOD was meant to ensure enhanced reliability, accuracy, zero retention, ergonomics/man machine interface, a reduced cyclic rate and an increased service life of 15,000 rounds. A su
The M4 carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 made by ArmaLite. It is a shorter and lighter version of the M16A2 assault rifle, achieving 80% parts commonality with the M16A2. The M4 has selective fire options including semi-automatic and three-round burst (like the M16A2), while the M4A1 has a “full auto” option in place of the three-round burst. Overview The M4 and variants fire 5.56x45mm NATO ammunition and are gas-operated, air-cooled, magazine-fed, selective fire firearms with a 4-position telescoping stock. Original M4 models had a flat-ended telescoping stock, but newer models are now equipped with a redesigned telescoping stock that is slightly larger with curvature at the end. The M4 is similar to much earlier compact M16 versions, such as the 1960s-era XM177 family. Some of those visual designs are obvious in both weapons, however most of the similarities are not very noticeable. s with
