Hk M27 Iar - In AR-15, Defense, Guns & Gear, News, Other Gear & Gadgets, Rifles by Nathaniel F with 379 comments
Tags: ***, 5.56mm, carbine, future, h and k, h und k, H&K, heckler, iar, automatic infantry rifle, interim, koch, m16, m16a4, m4, m4a1, m4a1+. urg, new generation, rifle, surg, upgrade, common reception manager
Hk M27 Iar
Since its introduction in 2009, the Marine Corps' M27 automatic infantry rifle has proven to be an effective support weapon, providing greater firepower and range than any other weapon in the group, the M4 carbine and the M16A4 rifle. This positive reception led many in the Corps to the obvious conclusion: the USMC should replace its infantry battalion M4s and M16A4s with the M27 IAR. This idea gained so much attention that the USMC experimented with arming the entire military with IARs and issued an RFI to industry for 11,000 more IARs.
Umarex Vfc Licensed H&k M27 Iar Aeg Airsoft Rifle
To explore this idea further, I sat down with an unknown small arms expert to discuss the M27 IAR, its potential as an infantry weapon, and other aspects of the Marine Corps infantry weapon. I came to a surprising conclusion: the M27 IAR is not the right sniper rifle for the Marine Corps. In this article, I will outline the reasons that led us to this conclusion and suggest a better alternative.
Before we talk about why the M27 isn't the right choice, though, let's understand what the M27 brings to the table as a weapon. For starters, unlike the M4 carbine and M16A4 rifle, the M27 IAR has a superior cartridge and a manual system. The barrel of the M4 carbine is made from the same 4150 steel (a low-alloy chome-molybdenum steel) that has been the military standard since World War II. At M4, this steel is forged, heat treated to 277 and 331 Brinell (approximately 28-36 Rockwell C) and then chrome lined. On the M27, by contrast, the barrel is made from Aubert & Duval chromium-molybdenum-vanadium steel with a high chromium content, cold hammered to give a tapered barrel and heat treated to 41 Rockwell C, then chrome line. These valuable features, especially the heat treatment, give the barrel different life and accuracy, and it is the most flexible of the M27. Also, instead of the M16A4 and the M4's classic delta-ring system, the M27 uses an improved barrel and handguard system that connects via a slot with a loose set of handguards, e.g. improving the harmonics of the pipe. For the Marine Corps, the ability to make accurate hits from any position - whether shot, from a wall, from a bipod or bag, etc. .
These features are simply: The M27 is more accurate, stays straight longer, and has a longer barrel life than the M4 carbine or M16A4 rifle. A gun that maintains its accuracy and precision longer provides more hits, better penetration at close range, and greater effectiveness in combat.
Does the Marine Corps approve? The basic reason is that the M27 is a weapon that was developed in the early 2000s and was selected based on a 2007 RFI. The M27 is not a bad weapon, but in the ten years since the infantry automatic rifle. program was announced, major off-the-shelf (COTS) upgrades were introduced that may provide a similar or better weapon. The M27 can, but at a lower price and lighter weight. Better yet, by improving the M4 carbine, the technical deficiencies found in the M27 can be avoided. This type of improvement could be accomplished through a depot-level upgrade program or a high-level squad upgrade program to the existing M4, opening up more sales channels to the Marine Corps that would be closed if the M27 were pursued . Just having the M27 as the standard infantry weapon will do the opposite: instead of learning from the Corps' experience with the IAR and implementing the best solution for the fleet to deliver the power needed in the Infantry, they will just attach the ring. in their first great pain. The M27 provides the way forward, but is itself the first technology. A better way is to use the competitive environment to get something better, easier and cheaper.
M27 (hk 416) Assault Rifle By Alexander517 On Deviantart
One area where the new rifle improves on the M27 is the bolt and gas system setup. Our source told TFB that with the M855A1, the M27 achieved a typical bolt life (measured at the front barrel cut) in high load tests of 6,000-7,000 rounds and a barrel life (measured at 200 ft/s). velocity loss) of 9,000-10,000 rounds. In the same tests, the M4A1 had a barrel life of only 7,000 rounds due to its steel and inferior construction (although the carbine assembly lasted thousands more). However, the M4A1 carbine
M27 in bolt life, averaging 9,000 rounds before cutting. A single M4 bullet went through 13,000 rounds before its first round came loose! As I will explain below, this difference in bolt life is the result of something different and related to the design of the M27, and therefore requires a lot of time, effort and money through comprehensive change plans (ECP) to fix the problem. For the M4 carbine, better bolt life is more than achievable with simple upgrades and upgrades at very low cost.
The reason the M27 bolt does not survive has to do with its gas system. From its inception, the HK416 (a member of the M27 family) was designed as a short-range rifle, an industry effort to create an alternative to the Mk.18 Close Quarters combat receiver. To achieve the required reliability, Heckler & Koch significantly increased the gas flow to the HK416's short-stroke piston. This reliability is enhanced with 10.5-inch barrels and the original H&K "Navy" steel requirements. Since then, the HK416 has greeted the general market as a true carbine long assault rifle, but has retained the original gas system design of the short variant. This led to an "overgassing" condition that resulted in high cycle rates and increased wear, a condition exacerbated by the short piston operating rod system. Specifically, the operating rod of the HK416 transmits the kinetic energy of the gases increasing the movement in the moving assembly.
After the gas is trapped in the gas block rather than allowing the gas to expand through the tube as in Stoner's direct impact. That is, if the gas is not released immediately (such as when a bullet is released from a short 10.5 inch barrel), then the system will undergo a large amount of high pressure gas release that continuously operates the piston as bullet trips. down the rest of the length of the cylinder. On long-barreled HK416s like the M27, this causes the bolt to open first at a time when pressure is high, and unlike straight-bolt AR-15s, there is no gas pressure forward on the trigger. the box. detach the extension. All of this adds up to a heavier lug and shorter bolt life for the M27 than the M4 carbine, with higher cycle rates requiring tighter, more durable magazines. To compound this problem, the M27 manual, unlike the M4, requires the bolt groups to be replaced as a unit. This means that when a screw shears a lug, the entire assembly and bearing assembly must be removed and replaced with a new part. Ideally, a new high-end cartridge for the M4 carbine will incorporate the same cartridge and tooling as the HK416, but use a mid-length gas displacement system to reduce bolt fatigue, increase idle time, reduce velocity screw and greatly improve the engine. performance. general characteristics. In addition, it can include new bolt treatment technologies that can significantly improve the service life than the current one, with a significant increase in the maintenance period of this part.
Hk/umarex (vfc) M27 Iar
One of the main advantages of the M27 IAR over its stablemates is its fire control unit. Where the M4 and M16A4 trigger groups offer safe, semi-automatic, and 3-round configurations, the M27 IAR's firepower has traded explosive performance for a full-range provision that allows the rifle to be designed for long bursts. This not only provides increased firepower, but also improves pull consistency and prevents malfunctions that can be caused by the explosive mechanism of the M4 or M16A4. However, as part of this package, the M27's starter kit also offers a reduced draw weight instead of a low-powered hammer spring. This model also picks up the side effects of the high bolt
Hk m27, hk iar m27, m27 iar review, m27 iar drum mag, m27 iar, m27 iar usmc, m27 iar price, vfc m27 iar gbb, m27 iar bf3, heckler & koch m27 iar, m27 iar lmg, vfc m27 iar
0 Comments