The M27 IAR is significantly lighter than the M249 SAW. How is the M27 Different from the M249 SAW? In addition, the M27 IAR can be fired from the prone, crouching, standing, or standing offset positions. It also has an adjustable telescopic stock, and it can be fired when the store is fully extended. The M27 IAR has a quick-change barrel, which can be changed in less than 10 seconds. The M27 IAR is designed to be fired from the right shoulder and can be fired from the left shoulder, but this is not recommended. It is belt-fed, and the ammunition is stored in a 100-round plastic box attached to the side of the weapon. It can be fired either as a fully automatic or as a semi-automatic rifle. The M27 IAR is a 5.56mm light machine gun. The stock is adjustable for the length of the pull and folds to the right side of the weapon for compactness. It can also use 100-round Beta C-Mag magazines and PMAGs (Polymer Magazines) in 25-, 30-, and 40-round capacities. The M27 IAR uses STANAG (NATO Standardization Agreement) magazines, also used in the M16 rifle and M4 carbine. The handguard is made of aluminum and has Picatinny rails at the 3, 6, and 9 o’clock positions for mounting sights, lights, or other accessories. It has a 1:7-inch twist rate and is fluted to reduce weight and increase cooling capacity. The barrel is free-floating and made of cold hammer-forged chrome-lined steel. This system reduces fouling, increases reliability, and allows the use of suppressors with a slight decrease in performance. The M27 IAR is gas operated with a rotating bolt and uses a short-stroke piston system. It is intended to supplement or replace the M249 Squad Automatic Weapon in certain roles. The M27 IAR was developed to give infantry squads a higher volume of fire than what could be provided by the standard issue M4 carbine, without the weight or recoil penalties of a belt-fed light machine gun. The M249 was also very difficult to change barrels on, which made it challenging to maintain in the field. This was problematic because it was so heavy that infantrymen couldn’t use it effectively on the move. It was developed for use in the Humvee, but troops often had to carry it on foot. The main problem with the M249 was that it was heavy. The M249 had a few problems when issued to troops, which were corrected in the M27. The M249 entered service as the M249 SAW (Squad Automatic Weapon) but has since been replaced by the M27 Infantry Automatic Rifle (IAR). It was developed to replace the M60 machine gun, which had been in service since the 1950s. The M249 Squad Automatic Weapon has been in US Army and Marine Corps since the early 1990s. History of the M27 Infantry Automatic Rifle The IAR is also issued to infantry soldiers within an Infantry Battalion Task Force. It is the supposed successor to the M249 Squad Automatic Weapon, providing soldiers with a more compact, lighter, and improved version of the standard general-purpose machine gun that can be useful in a wider variety of scenarios. The M27 Infantry Automatic Rifle (IAR) is the standard squad automatic weapon for all United States Marine Corps. Introduction to the M27 Infantry Automatic Rifle With that being said, let’s take a look at everything you need to know about the M27 Infantry Automatic Rifle. The M27 is built explicitly for and issued to infantry soldiers (hence “Infantry” in its official designation) within an Infantry Battalion Task Force. The M27 is often mistaken as just an upgraded version of the FN Minimi or even its modified version, but that isn’t exactly correct. It is derived from the Heckler & Koch HK416 and is currently in service with the United States Marine Corps. The M27 Infantry Automatic Rifle (IAR) is a select-fire weapon that chambers the NATO-standard 5.56x45mm cartridge. The M27 Automatic Rifle is the standard squad automatic weapon for all US Marines.
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