Military Review

AR-15 vs ... AR-15

33
Weapon and firms. In the world of technology, including military, it very often happens that some new product does not have time to get on the conveyor, as there are people who see how to improve it. But nothing can be improved, since all contracts have been signed, money has been allocated, and any change in production will inevitably cause a delay in its release. Or, on the contrary, the novelty seems to satisfy everyone at first, but its operation began and it turned out that "they thought one thing, but it turned out completely different." And it also happens that years pass between the start of production and the appearance of new structural materials and technologies, but then it turns out that their use in this old model can improve its performance very significantly.



Malaysian special operations detachment with M6 machine gun 5,56 mm NATO LWRC International


The market is all over the head!


This is where the extremes of mass mass production are avoided and the market, or rather, relatively private companies operating on it, helps. They are not connected with the government by large volumes of serial deliveries and can arbitrarily improve serial models. The military also benefits: they can always compare them with the latest products from these companies and ultimately choose the best.


M6 caliber 5,56 mm NATO company LWRC International. Rate of Fire 700-900 rounds per minute. Muzzle velocity 850 m / s. Empty weight 2,83 kg


So the company LWRC International (Land Warfare Resources Corporation - the Corporation for the study of ground weapons) was founded precisely with the aim of improving the family automatic rifles AR15 / M16 / M4. Operational experience allowed us to identify all their strengths and weaknesses, and new technologies to further strengthen the first and level the second. So, as a result of the work of the company's specialists, another M6 family of gas piston rifles and carbines was created, in which the direct supply of powder gases from the barrel to the receiver and to the bolt was replaced by a much more reliable piston mechanism with a short piston stroke.


Model M6A2 with a "terracotta coating" under the cartridge caliber 6.8 × 43 mm. 760 bullet speed m / s


The equipment is the most modern!


The company is headquartered in Cambridge, Maryland, where there are also three production facilities with a total area of ​​more than 8300 square meters. In the workshops there are fifty modern CNC machines, there are laser cutting machines, screw cutters, a robotic welding and painting installation, and fully comply with all modern industry standards. LWRCI is also registered in the Lloyd's Quality Registrar and is fully compliant with the ISO-9001 international standard.

Direct exhaust gas - no, piston-pusher - yes!


In order to improve the M16 / AR15 / M4 family, the company's engineers developed a patented, self-propelled, short-stroke self-regulating gas piston system. It completely eliminates the emission of hot gases saturated with carbon oxides in the receiver and eliminates their impact on the shutter. The springs that are located there are also not exposed to their burning effect, which is one of the main reasons for their failure, as well as the breakdown of various small parts. As a result, the new rifles and carbines presented by the company on the market turned out to be much more reliable than their immediate predecessors.


Piston pusher and bolt rifle LWRC REPR MKII. Unlike our AK, here the piston is a separate spring-loaded part. The turned out screws of fastening of the top part of forend are well visible.


Another advantage of the piston scheme is a lower recoil force, as well as a barrel toss. Surprisingly, this is achieved on the same AR-15 rifle, which is ergonomically identical to the standard model, weighs almost the same, and in which 80% of the parts are interchangeable.


“Twisted barrel” and “cover” (upper fore-end panel) of the piston mechanism


New technologies come to life!


Another “invisible” novelty (or almost imperceptible) was forged trunks made of 41В45 alloy steel by cold forging and processed using NiCorr surface hardening technology. During cold forging, an oversized billet of the barrel is taken, and then it is compacted using high-pressure presses, being worn on the mandrel. This allows you to get the perfect cut inside the barrel without any traces of the tool. This technology also densifies the molecular structure of the metal, making it more dense and durable. These barrels can last significantly longer than standard barrels, without compromising accuracy or losing bullet speed. Moreover, the unusualness of many trunks of rifles of this company is immediately evident. The fact is that they are ... not smooth, but spiral-grooved, and they are 20% lighter than cylindrical of the same diameter. The increased surface area accelerates cooling, and even such trunks are certainly stronger than a regular smooth barrel. Although the company has rifles with smooth trunks. They are cheaper. By the way, NiCorr surface treatment is also advantageous in that it makes the barrel more wear-resistant, more heat-resistant and resistant to corrosion than with conventional chrome plating. Such barrels withstand up to 20 000 shots, compared to 6 000 – 10 000 shots for a standard army M4.


“Twisted barrel”, gas regulator and one of the screws securing the upper forearm panel


All rubbing parts of all M6 rifles now have a patented nickel coating that almost eliminates corrosion and at the same time provides constant lubrication of moving parts without the use of oil! This nickel plating is similar to that used by the US Army Research Laboratory to extend the life of existing weapons systems.

Ceramic Rifle


Another innovation of the company was Cerakote ceramic coating, which was developed as an alternative to traditional black anodizing. Cerakote is a type of thermally cured coating for firearms and it is undoubtedly one of the most successful and promising developments. It is applied over a standard anodized coating and provides unrivaled abrasion and corrosion resistance. All the advantages of Teflon and without sacrificing durability. This is also a self-lubricating coating, which means that these rifles can work with less grease; and this is especially valuable in the desert or in other "dusty places." Currently offered rifles in the colors of "matte dark earth" (Flat Dark Earth), "olive green" (Olive Drab), "local brown" (Patriot Brown). True, all Cerakote coated rifles are more expensive than the standard 150 black ones, but it's worth it.


Rifle LWRC REPR MKII NATO 7.62 caliber with barrel length 406 mm and ceramic coating


Well, now let's get acquainted with individual samples of weapons of this company.



The first in a row will be a short IC-PSD assault rifle, which combines the firepower of a rifle cartridge and the dimensions more characteristic of submachine guns. Due to its size and light weight, it is easy to carry and use in a wide variety of conditions. It has an 177-mm Picatinny rail, which allows the shooter to mount a variety of devices on his weapon. Access to the gas piston system is quite simple: you just need to loosen the two screws on the forend.

Barrel length 210-mm. The shutter frame and the shutter itself are nickel-boron coated, which gives unprecedented wear resistance, corrosion resistance and ... constant lubrication.

The kit includes LWRCI Skirmish sights, a dual-sided charging handle, LWRCI's proprietary, adjustable compact handle, Magpul handle and a high-performance 4-pin flash toggle switch.


Rifle IC-A5. Left view



Rifle IC-A5. Right view



Another representative of the compact gas piston series optimized for 6,8 x 43 mm SPC II cartridges



SIX8-SPR is a special-purpose rifle for 6,8 x 43 mm Remington SPC II cartridges. The cartridge has more power than 5,56-mm, but lighter than 7,62-mm. The rifle uses alloys that are most often used in the aerospace industry, which increases its quality and ... price! The window for ejecting cartridges is enlarged, and so it looks practically no different from weapons of standard calibers. Extractor spring also reinforced

AR-15 vs ... AR-15

Cartridge 6,8 x 43 mm Remington SPC



The same rifle, but under the standard NATO cartridge 5,56-mm - LWRC IC SPR


The company also produces the LWRC REPR rifle "Sniper Model" (sniper model) with a barrel length of 508 mm; model LWRC REPR “Designated Marksman Rifle” (DMR) - that is, a rifle for “marksmen” with a barrel length of 457 mm; LWRC REPR “Standard Model” with a barrel length of 408 mm; and the same model, but with a barrel length of 322 mm. By the way, the abbreviation “REPR” (Rapid Engagement Precision Rifle) can be translated into Russian as “an accurate rifle for quickly hitting targets”, which once again emphasizes its high quality.


They have one reloading handle and are moved to the left side



Sniper rifle LWRC REPR-308-AR15-6. Interestingly, in its butt there is a capacity for electric batteries needed to power various attachments



LWRCI-DI 224 Valkyrie. Another rifle for very accurate shooting at a distance of 1000 yards (900 m) chambered for 6,8 x 43 mm with an 30-loading magazine



It’s already very compact ... the “carbine” of the 6,8-mm caliber, in which all other qualities were sacrificed for compactness, even the butt. However, with the AR-15 system with the butt, you won’t especially run away. The return spring tube, which is its base, will still stick out back!



But the company also has a real submachine gun chambered for .45 ACP. His stock develops to the side, which is more convenient than for specimens leading their pedigree directly from AR-15. Weight without cartridges total 1,5 kg. Barrel made of chrome nickel steel, length 220 mm



By the way, if you wish, they can make a rifle even with a pure white coating: any whim for your money!


To be continued ...
Author:
Articles from this series:
CZ 805 A1 / A2. No worse than the good old "Bren"
AR-15 of the Schmeisser company
33 comments
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  1. rocket757
    rocket757 18 September 2019 18: 53
    +4
    Good weapons .... not for everything and not for anything.
  2. evgen1221
    evgen1221 18 September 2019 18: 55
    -3
    Well, the bells and whistles from the private trader are good in small batches and in peaceful conditions, in wartime, an automatic machine from scraps of water pipes or our PPS rule.
    1. Kalmar
      Kalmar 19 September 2019 09: 43
      +3
      Quote: evgen1221
      Well, the bells and whistles from the private trader are good in small batches and in peaceful conditions, in wartime, an automatic machine from scraps of water pipes or our PPS rule.

      Do not rule. Big wars are out of fashion; most conflicts are now local in nature, and multimillion-dollar shipments of weapons are not needed here. But those very "small" (relatively) parties in the interests of the MTR and other "limited contingents" - quite.
  3. Engineer
    Engineer 18 September 2019 19: 13
    +8
    Beautiful things
    Let the author not consider nitpicking, but not restrained:
    This technology also densifies the molecular structure of the metal, making it more dense and durable.

    1. In metals, the atomic structure is not molecular.
    2. The process of hardening during cold plastic deformation, "work hardening", works somewhat differently. Metals have a "grainy" structure. Under pressure without heating, defects in the structure of individual grains of crystals are squeezed out to the boundaries of the "grain", collecting there and preventing further deformation, thereby increasing the strength. The second point is the crushing of the grains themselves, into smaller ones, which also increases the strength.
    1. acetophenon
      acetophenon 18 September 2019 19: 31
      +3
      Not everyone studied at a good university.
      1. Engineer
        Engineer 18 September 2019 19: 36
        +6
        I studied on average). But I remembered it. I came to the lecture on "rags" drunk (hello Baltika 9 wassat ) I read it myself as the head of the department. I wrote down the surname. He said that he would take it personally. After that, I realized that seriously. He really took the head and drove his nose around the course)
  4. Basarev
    Basarev 18 September 2019 19: 50
    +3
    It would be similar to who upgraded AK.
    1. Catfish
      Catfish 18 September 2019 23: 37
      +3
      It’s time to no longer upgrade the AK, but to replace it with something new, from hanging any trinkets on it, the weapon will not get better.
      1. East Kazakhstan
        East Kazakhstan 19 September 2019 06: 22
        +3
        I agree!!!!! Russia needs a new system of small arms !!! Although AK can continue to use ...
        1. Izotovp
          Izotovp 19 September 2019 07: 59
          0
          The new AM can be compared in a comprehensive assessment with this much-publicized miracle.
      2. Kalmar
        Kalmar 19 September 2019 10: 14
        +6
        Quote: Sea Cat
        It’s time to no longer upgrade the AK, but to replace it with something new, from hanging any trinkets on it, the weapon will not get better.

        It would be nice to begin with to understand what exactly AK in its current implementations does not suit.

        Say, some sloppies in terms of ergonomics are completely removable (the handle is more comfortable, the flag of the fire translator with a pedal, etc. - IPSC arrows in the subject). Some problems (the same accuracy) can be partially cured by an increase in industrial culture (we have trouble with that now, yes).

        It’s still difficult to come up with something radically new at the current stage of development of small arms. Even Western innovations, in fact, only rethink ideas and concepts a little more 70s of the last century.
        1. mmaxx
          mmaxx 19 September 2019 14: 52
          +3
          You just need to teach soldiers to shoot in the army. In battle, everything is on the nerves. There the technical accuracy of the weapon is not enough, which decides.
          But ARki are surprisingly comfortable gizmos. Amerikosy are able to make trunks.
  5. Undecim
    Undecim 18 September 2019 20: 14
    +9
    All the rubbing parts of all M6 rifles now have a patented nickel coating that almost eliminates corrosion and at the same time provides constant lubrication of moving parts without the use of oil!
    Alas, Vyacheslav Olegovich, tribology, of course, achieved great success, but even in the USA it did not reach such a level that the weapon worked without lubrication.
    Firstly, not all rubbing parts have a wear-resistant coating of nickel alloy, but only the bolt frame, barrel extension, and the rubbing surfaces of the trigger and the trigger.
    (Every detail counts. LWRCI uses a patented nickel-alloy coating on all of our bolt carriers, barrel extensions, hammers and triggers to provide superior protection from the elements.)
    Secondly, it does not work without lubrication, therefore there is a special chapter in the "Operating Instructions" in which the manufacturer indicates the recommended lubricants and recommendations for their use.

    And if you want to get the trigger also with an anti-friction Teflon coating, this is already separate, for $ 116.
  6. kalibr
    18 September 2019 20: 46
    +4
    Ha! You have found it! I read when I collected the material. But ... in the end, so much of everything happened that the volume in the signs became prohibitive. Articles of a volume greater than a certain number of characters are perceived ... badly. Therefore, you have to limit yourself (and the source).
    1. Undecim
      Undecim 18 September 2019 23: 48
      +5
      By the way, in such articles I see the point at least briefly characterizing the materials and technologies, otherwise the reader may get the opinion that LWRC is using some kind of "space" achievements in this area.
      Steel 4145 is not unique, it is a structural alloyed chromium-molybdenum steel, widely used in mechanical engineering. A close analogue is 40HGMA according to GOST 4543-2016.
      NiCorr technology is no less widely used ion-plasma nitriding since the 90s.
      The antifriction properties of Teflon, which is known as fluoroplastic, are also well known, but it cannot self-lubricate, it can be a component that reduces friction.
      1. kalibr
        19 September 2019 07: 00
        0
        You are certainly right. But ... again, "but". 80% of readers are not deeply interested in such data. 40HGMA in accordance with GOST 4543-2016. People just skip it and forget right there. 90% forget 99% of information after 90 + 1 days. I checked it more than once. So why bother people with the fact that they, as non-specialists, do not even need anything at all. Only interferes with reading! It has long been proven that, again, 80% does not matter what is written. It is important how: simple, understandable, interesting! GOST and TTX - this is for a big fan.
        1. Undecim
          Undecim 19 September 2019 08: 06
          +5
          80% of readers are not deeply interested in such data.
          However, by writing an entire article for 80%, you can write a couple of paragraphs for the rest of 20%.
  7. bunta
    bunta 18 September 2019 22: 05
    +4
    Such barrels withstand up to 20 000 shots, compared to 6 000 – 10 000 shots for a standard army M4.

    When you talk about this at one time (6-10 thousand shots), although the AK 74 withstood 18, few people did not believe it five years ago. And now this is awesome progress !!! The citizens of the Russian Federation, our Soviet designers and technologists have bypassed our "partners" a generation ahead! You can put on all this news with a large device, they do not damage the defense of the Russian Federation!
    1. Undecim
      Undecim 18 September 2019 23: 06
      +5
      With regard to firearms, especially military ones, talking about the resource of the barrel without taking into account factors affecting its wear is a pure abstraction.
      1. Pane Kohanku
        Pane Kohanku 19 September 2019 09: 45
        +2
        Viktor Nikolaevich, can you solve the question not in the topic of your discussion, but in the topic of AR-15? Remember the movie "Terminator", where old Arnie shoots a police station with all the inhabitants? It seems he was holding a Canadian version of this rifle. Or not? hi
        1. Undecim
          Undecim 19 September 2019 10: 12
          +2
          At the time of filming the first "Terminator", the Canadian version of the Diemaco C7 was still in service.
          1. Undecim
            Undecim 19 September 2019 10: 20
            +1
            The first terminator used the AR-18, which ArmaLite built in the early 1960s after the departure of Stoner. But the American military did not like it and in the USA they did not accept it. Served as the basis for the British L85 / SAR-87, Singaporean SAR-80, German HK G36, Japanese Type 89. It is similar to the AR-15, but it has a gas piston device with a short stroke.
            1. Pane Kohanku
              Pane Kohanku 19 September 2019 10: 30
              +2
              Served as the basis for the British L85 / SAR-87

              Wow! but I thought the British did their bullpups themselves ... However, thanks! And for the AR-18, too! good didn't know, didn't know ... hi
            2. kalibr
              19 September 2019 10: 33
              +1
              Nickname - "Widowmaker"!
              1. Undecim
                Undecim 19 September 2019 10: 44
                +2
                This "chase" was used only by the Irish IRA for the civilian AR-180 semi-automatic. As they say, it is widely known in narrow circles.
                1. Pane Kohanku
                  Pane Kohanku 19 September 2019 11: 10
                  +2
                  As they say - it is widely known in narrow circles.

                  something like that. Like "terrorist" jargon ... what
                  Steel 4145 is not unique, it is a structural alloyed chromium-molybdenum steel, widely used in mechanical engineering. A close analogue is 40HGMA according to GOST 4543-2016. NiCorr technology is no less widely used ion-plasma nitriding since the 90s.

                  I am afraid you know this better than all of us. To be honest, I don’t know how the others are, but I’m generally zero in this. You have a profession! hi drinks
    2. Carnifexx
      Carnifexx 25 February 2020 12: 57
      0
      6-10K shots didn’t "survive", but the minimum requirements that it will definitely withstand, and then how lucky. For AK, too, the same 10K, by the way, but the fact that he withstood this is a separate sample - you should not extrapolate, I did this in childhood, but I stopped so that the hair on the palms did not grow.
      And the question of accuracy after all the "adventure" is open.
      MMM, then POF-USA and LWRCI are RELIABLE than AK.
  8. kalibr
    19 September 2019 07: 03
    +1
    Quote: Undecim
    With regard to firearms, especially military ones, talking about the resource of the barrel without taking into account factors affecting its wear is a pure abstraction.

    However, they speak and write constantly.
  9. kalibr
    19 September 2019 07: 04
    +2
    Quote: Engineer
    The process of hardening during cold plastic deformation, "work hardening", works in a slightly different way. Metals have a "grainy" structure. Under pressure without heating, defects in the structure of individual grains of crystals are squeezed out to the boundaries of the "grain", collecting there and preventing further deformation, thereby increasing the strength. The second point is the crushing of the grains themselves, into smaller ones, which also increases the strength.

    Of course, I do not know such subtleties.
    1. Engineer
      Engineer 19 September 2019 11: 22
      +2
      I do not require the authors to know such subtleties laughing
      Reacted to the "molecular structure"). And about strain hardening, this is more in pursuit. I wanted to convey that the distance between atoms in the hardened metal lattice itself does not change. That is, there is no "seal" as such.
      This is generally about the balance of the article. Here the question was already raised how important (or vice versa should not be) to go into details. Even if it was decided to sacrifice details, I would like less blunders to all authors, although I understand that everyone had and will be.
  10. kalibr
    19 September 2019 08: 09
    +1
    Quote: Undecim
    80% of readers are not deeply interested in such data.
    However, by writing an entire article for 80%, you can write a couple of paragraphs for the rest of 20%.

    Let's see how it will turn out in practice and whether it will be worth the "game of dressing".
  11. Ironcity
    Ironcity 19 September 2019 14: 35
    +3
    Di .224 Valkyrie cannot be under the caliber of 6.8 ATP, since it is a caliber of 0.224 Valkyrie laughing , which, in turn, is compressed to .224 inches 6.8 ATP.
  12. kalibr
    19 September 2019 17: 13
    +1
    Quote: Engineer
    then I wish less blunders to all authors, although I understand that everyone has had and will be.

    This is an obvious and best wish!