The SOCOM upper receiver group and M27 lower are not compatible. That way operators can swap out components in their weapon system to meet various mission demands. Raiders use an M4 lower receiver, the trigger and housing, attached to a Special Operations Command-upper receiver, the barrel and bolt. “Given the smaller size of our operational units, the M249′s volume of fire provides a greater tactical benefit than the advantages provided by the M27,” said Maj. That has had to do both with the profile of missions requiring shorter barrels and also a need for a greater volume of fire they still get from the SAW, a MARSOC spokesman told Marine Corps Times in 2018. Marine Special Operations Command Raiders continue to carry the M4 carbine. Beaudreault, deputy commandant of Plans, Policies and Operations, told the congressman that H&K, a Germany-based company, won the competition and changes now would put fielding behind by two years and substantially raise the price of the contract.ĭespite its successes in fielding, certain elite within the Marine ranks decided not to take the new rifle and are sticking with the M4s. The information contained on this page is unclassified, approved for public dissemination and is released under CC-BY-SA Licensing Agreement. Gas-operated short-stroke piston,rotating boltģ.5x SAW Day Optic, flip-up rear rotary diopter sight and front post Specificationsģ6.9 to 33 in (940 to 840 mm) w/ adjustable stock Suggestions include use as an automatic rifle and as a designated marksman rifle. With a shrinking budget, the Marine Corps is looking at ways to implement the IAR as a multipurpose weapon. IAR gunners consider the rifle-grade accuracy to be a huge improvement over the SAW, despite the loss of sustained firing. It is more friendly to troops due to its cleaner, lightweight system having fewer moving parts and jams. Marines issued with the M27 enjoy its familiarity with the M4-style weapons in service. An M27 gunner with one aimed shot has the effect of three or four automatic shots from the SAW, and still has the option of a heavier volume with an accurate grouping. Some gunners in combat have been used as designated marksman. Shooters transitioned from long-range precision fire at 700 meters to short-to-medium suppressive fire at 200 meters, both while in the prone position. With the M27 IAR, the idea of suppression shifts to engaging with precision fire, as it has rifle accuracy at long range and automatic fire at short range. With the M249 SAW, the idea of suppression was volume of fire and the sound of the machine gun. Concern of volume of fire loss was made up for through training courses developed in December 2010. The battalion leadership also saw the M27 as better at preventing collateral damage, as it is more controllable on automatic than the M249. It also blended in with standard M16-style service rifles, so the enemy did not know who was a machine gunner. Gunners said it was "two weapons in one," being able to fire single shots accurately out to 800 meters and have fully automatic fire. It weighed 9 lb loaded, compared to 22 lb for an M249, which was a significant difference when on 5-hour long missions.
Former SAW gunners initially did not like the M27, but appreciated it as time went on. Combat reviewsĤth Platoon, Alpha Company, 1st Battalion 3rd Marines was deployed to Afghanistan in April 2011 with 84 IARs. The United States Army does not plan to purchase the IAR. Approximately 8,000–10,000 M249s will remain in service at the company level to be used at the discretion of company commanders. Marine Corps is planning to purchase 6,500 IARs to replace a portion of the M249 light machine guns currently employed by automatic riflemen within Infantry and Light Armored Reconnaissance Battalions. It is intended to enhance an automatic rifleman's maneuverability and displacement speed, and it is based on the HK416. The M27 Infantry Automatic Rifle ( IAR ) is a lightweight, magazine -fed 5.56mm weapon used by the United States Marine Corps.
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