Difference between M4 and M16

Main Difference

By nature, the M16 is a rifle and the M4 is a carbine. The M16 rifle and the M4 carbine are self-loader and programmed weapons that began in the U.S. They are issued to U.S. troops and North Atlantic Treaty Organization (NATO) powers around the world. The M16 was the standard U.S. military strengths weapon from the mid-1960s and ahead, yet is being supplanted by the M4, a littler, more adaptable carbine. The M16 contends with the AK-47 in overall deals, and the M4 is required to be sold all the more internationally certainly before 2020. The M16 is the substitution adaptation of the M14, utilized by U.S. military strengths in World War II and the Korean War. The development of the Russian AK-47 constrained an update of the M14 to expand capability and trustworthiness, bringing about the selection of the M16 amid the Vietnam War. Improvement of the M16 required a few cycles due to the projectile configuration, terminating modes, and basic dependability. The M4 happened when the U.S. Pentagon started an opposition to supplant the M16 Rifle with a carbine outline utilizing a shorter barrel for close-quarter battle. In spite of the fact that M16 variations with shorter barrels were in across the board use, they were boisterous, hard to handle, and had poor precision. After a few plans were exhibited, the Army assumed control over the M4 Carbine advancement in 2009 and recommended changes in materials and terminating activity, supplanting the impingement mode (like the M16) with an exclusively gas-worked mode. The M4 has been in broad use by strategic strengths in Afghanistan and Iraq and is booked to completely supplant the M16 as standard issue by 2018.


The M4 is a 5.56×45mm NATO, air-cooled, direct impingement gas-worked, magazine-nourished carbine. It has a 14.5 in (370 mm) barrel and an extendable stock. The M4 carbine is vigorously utilized by the United States Armed Forces and is supplanting the M16 rifle in most United States Army and the United States Marine Corps battle units as the essential infantry weapon. The M4 is additionally fit for mounting the M203 explosive launcher. The particular stride in their barrel is for mounting the M203 with the standard equipment. The M4 is fit for terminating in self-loader and three-round burst (like the M16A2 and M16A4) while the M4A1 is equipped for terminating in self-loader and full program (like the M16A1 and M16A3). The M4 and its variations fire 5.56×45mm NATO (and .223 Remington) ammo are gas-worked, magazine-encouraged, specific fire guns with either a multi-position extendable stock or an altered A2 or LE strategic stock. The M4 is a shorter and lighter variation of the M16A2 rifle, with 80% sections commonality. The 20% of the parts that are not compatible incorporate the support spring and weight, barrel, and gas tube because of the shorter carbine length. The M4 is like much prior minimized M16 renditions, for example, the 1960s-period XM177 family. Some of those visual outlines are clear on both weapons. Likewise with numerous carbines, the M4 is helpful and more advantageous to convey than a full-length rifle. The cost is somewhat mediocre ballistic execution contrasted with the full measure M16, with it’s 5.5″ (14 cm) longer barrel. This turns out to be most clear at scopes of 200 yards and the past. While the M4’s mobility makes it a possibility for non-infantry troops (vehicle groups, assistants, and staff officers), it additionally makes it perfect for lacking elbow room fight (CQB). The M4, alongside the M16A4, have for the most part supplanted the M16A2 in the Army and Marines. The U.S. Flying corps, for instance, has transitioned totally to the M4 for Security Forces squadrons, while other furnished workforces hold the M16A2. The US Navy utilizes M4A1s for Special Operations and by vehicle teams.


The M16 rifle, formally assigned Rifle, Caliber 5.56 mm, M16, is a the United States military adjustment of the ArmaLite AR-15 rifle. The first M16 was a select-shoot, 5.56×45mm rifle with a 20-round magazine. In 1963, the M16 entered American military administration and was sent for wilderness fighting operations amid the Vietnam War. In 1969, the M16A1 supplanted the M14 rifle to end up the U.S. military’s standard administration rifle. The M16A1 upgrades incorporate a jolt help, chrome plated bore and another 30-round magazine. In 1983, the USMC embraced the M16A2 rifle and the U.S. Armed force embraced it in 1986. The M16A2 shoot the enhanced 5.56×45mm NATO (M855/SS109) cartridge and has another customizable back sight, case redirector, substantial barrel, enhanced handguard, single handed grip and buttstock, and also a self-loader and three-round burst just fire selector. Adopted in 1998, the M16A4 is the fourth era of the M16 series. It is furnished with a removable conveying handle and Picatinny rail for mounting optics and other subordinate devices. The M16 has likewise been generally received by different militaries around the globe. Absolute overall generation of M16s has been around 8 million, making it the most-delivered gun of its 5.56 mm caliber. The U.S. Armed force has to a great extent supplanted the M16 in battle units with the shorter and lighter M4 carbine, and the U.S. Marine Corps endorsed a comparable change in October 2015.

Key Differences

  • The M16 is an Assault rifle but the M4 is a Carbine.
  • The weight of the M16 is 7.18 lbs (3.26 kg) when unloaded, and 8.79 lbs (4.0 kg) when loaded. In contrast, the M4 has the weight of 6.36 lbs (2.88 kg) when empty, and 6.9 lbs (3.1 kg) with 30 rounds.
  • The M16 is older.

Video Explanation

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