Military Review

Rapid Engagement Precision Rifle Sniper Rifle

27
There will always be a demand for self-loading rifles, which have relatively high accuracy and use common ammunition. It seems that an infinite number of such samples have already been created, but they all appear and appear, and they do not differ in principle from their predecessors. So, as a matter of fact, nothing supernova appears and everything is maintained only through advertising, although sometimes interesting samples come across, but this is rare. In this article we will try to get acquainted with the next variation of the sniper rifle based on AR-10 under the cartridges 7,62х51, but with some differences and modifications.


Another series of sniper rifles appeared in 2010, thanks to the work of LWRC International. Weapon It received the name Rapid Engagement Precision Rifle, which can be translated as a “quick-fire precision rifle” or something like that, abbreviated as REPR. Weapons immediately released in three versions: Sniper, DMR and Standart. They differ only in barrel lengths, although many also note the difference in buttstocks, but the butt can be installed any, regardless of the modification of the weapon. So, the Sniper variant is a millimeter 1029-1054 rifle with a millimeter 508 barrel length. This is the most long-barreled and most difficult version of the weapon, therefore, the most accurate, which is reflected in the name. The weight of the rifle without ammunition is kilogram 5,11. DMR variant (Designated Marksman Rifle) It has a barrel length of 457 millimeters, with a total length of 978-1041 rifle millimeter, and a weight equal to 4,76 kilogram. The Standard version of the weapon is the shortest, its overall length is 952-1036 millimeters with a barrel length 409 millimeters, and the weight is equal to 4,31 kilograms. Also option Standart can be equipped with a shorter barrel length 323 millimeter, respectively, the total length of the weapon and its weight will be even smaller. All variants of rifles are powered by detachable magazines with 5,10 or 20 ammo capacity.

As is clear from what is written above, the total length of the weapon can vary within fairly large limits, which allows the rifle to be adjusted to fit a particular shooter. This adjustment is achieved with the help of buttstocks, which can be of various designs, including one that does not allow adjustment of the butt even in length. Among the various options of butts there are those that are regulated stepwise, smoothly, have adjustment of the cheek support, and even those that have a “third leg” under the butt. In general, due to the fact that a lot of stock options were produced for the AR rifle family, in this case a huge variety can be observed. If we talk about the appearance and ergonomics of the weapon, then it becomes immediately clear who is the progenitor of these rifles, even there is no reason to guess. But there are differences. First of all, the cocking handle, located on the left side of the weapon in the form of a rather large grooved cylinder, catches the eye. The tilt angle of the handle was also changed, and the handle itself received replaceable rear parts for adaptation to the size of the hand arrow. The forearm of the weapon is an octahedron, the upper face of which is made of a non-removable mounting bar, which is a continuation of the mounting bar on the receiver. Thus, there is enough space for an optical sight and night sight. The side and bottom faces have holes for mounting additional “picatinny” planks. It is noteworthy that, complete with a weapon, there are open aiming devices consisting of a front sight and a diopter pillar. These sights are mounted on the upper mounting bar and can be folded, which allows not to remove them when using an optical sight. So, if the optical sight fails, then it can simply be removed and immediately continue using the weapon, albeit at shorter distances. Standard bipods are also attached to the mounting bracket type "picatinny", but on the bottom. True, instead of the mounting strap, you can install other options for bipod mounting, so that there can also be achieved a certain variety. Standard bipod folding and adjustable in length.

Unlike the AR-10 and AR-15, the automatic rifles are built according to a scheme with removal of powder gases from the bore with a short piston stroke. An interesting and most important feature was that the weapon has two modes, self-loading and manual reloading. These modes are controlled by a fuse switch, which has three positions - the above two and the inclusion of a fuse. Actually the fact that the automatic weapon has the ability to disable, and quite convenient and fast and makes this series of rifles interesting. Of course, in other models, it is possible to lock the gas exhaust unit to eliminate the impact of moving parts on the accuracy of fire, but in few places it is implemented just as conveniently as here, and sometimes even an ordinary rifle itself requires one accurate shot, which does not allow automatic to do.

Rapid Engagement Precision Rifle Sniper Rifle
Author:
Photos used:
weaponland.ru
27 comments
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  1. bazilio
    bazilio 27 June 2013 09: 09 New
    +3
    a solution with 2 modes of automation looks interesting. Another thing is interesting, how much the manual reload mode will add accuracy
  2. avt
    avt 27 June 2013 09: 25 New
    +3
    Quote: bazilio
    a solution with 2 modes of automation looks interesting. Another thing is interesting, how much the manual reload mode will add accuracy

    Yes, perhaps a controversial decision, a kind of marketing move that allows you to sort of put it in a row with the bolts. Say not only infantry weapons but also a specialist - a sniper.
    1. bazilio
      bazilio 27 June 2013 10: 17 New
      +3
      Quote: avt
      Yes, perhaps a controversial decision, a kind of marketing move that allows you to sort of put it in a row with the bolts. Say not only infantry weapons but also a specialist - a sniper.


      I think there will be an increase in accuracy. I just thought how big it is, and therefore worth it. to show the same accuracy as with the boltoviks she is unlikely to succeed. for some reason I always remember the blazer cp 93- for 300 meters a series of 10 shots fits into a 28 mm circle !!
      1. Mister X
        Mister X 27 June 2013 19: 47 New
        +1
        Plucked on the manufacturer's forum
        the MR-31 target was used everywhere

        20 выстрелов из винтовки со стволом 20" с расстояния 100 ярдов (91,44 метр)
        20 shots with 20" 100 yrd (8 ring was first sight-in shot)



        30 выстрелов из винтовки со стволом 20" с расстояния 300 ярдов (274,3 метр)
        30 shots with 20" 300 yrd (testing various grains so I wasn't concerned with poi)



        20 выстрелов из винтовки со стволом 12" с расстояния 300 ярдов (274,3 метр)
        20 shots with 12" 300 yrd

        1. bazilio
          bazilio 27 June 2013 21: 59 New
          +1
          judging by 2 photos and the attached tape measure - 50 mm the dispersion cross-section at 270 meters is not particularly. on the other hand there are many holes. The only question is what mode was shot?
          1. Mister X
            Mister X 27 June 2013 23: 02 New
            +1
            Quote: bazilio
            30 shots with 20" 300 yrd (testing various grains so I wasn't concerned with poi)

            He writes that he shot cartridges with bullets of different weights, but did not play with the handwheels.
            How many found the video with this rifle - everyone shoots on a machine gun single.
            And only 1 manual reload roller.
            They all love automation and comfort.
  3. avt
    avt 27 June 2013 10: 29 New
    +1
    Quote: bazilio
    I think there will be an increase in accuracy.

    request And I will not argue.
    Quote: bazilio
    to show the same accuracy as with the boltoviks she is unlikely to succeed.
    And here I agree, but as I said before, universalization of weapons will probably not be achieved, and the main thing is marketing, and just another temptation to sell as a universal weapon for all categories of users.
    1. bazilio
      bazilio 27 June 2013 11: 51 New
      +1
      Quote: avt
      universalization of weapons will certainly not be achieved, and the main thing on the stage

      in the case of this trunk, universalization is yes. but I had in mind a little different, imagine a sniper self-loading with accuracy like the best boltoviks ... from such a barrel, specialists and amateurs will begin to profuse salivating))
    2. Mister X
      Mister X 27 June 2013 20: 00 New
      +1
      Quote: avt
      weapons universalization will probably not be achieved

      Set of 2's trunks for rifles Trigger and butt wink :
      12" с ПБС и коллиматором
      20" с биподом и оптическим прицелом

      Somehow we missed discussing the possibility of changing the trunk of this model.

  4. Vladimirets
    Vladimirets 27 June 2013 10: 46 New
    +2
    Interestingly, do variants with different trunk lengths have differences between the trunks except the length? Well, for example, thick-walled, rifling pitch. Or just sawing trunks? what
    1. bazilio
      bazilio 27 June 2013 13: 29 New
      +2
      Quote: Vladimirets
      Well, for example, thick-walled, rifling pitch. Or just sawing trunks?

      I don’t know the thickness of the barrel, but the steepness of the rifling may well be. as far as I understand the point, each cartridge has an optimal value for the speed of rotation of a bullet in flight, determined by the mass of the bullet, its speed and so on. therefore, the shorter the barrel, the steeper the cut should be, in order to give the appropriate rotation. On the other hand, the rotation of a bullet is necessary to stabilize it in flight and to avoid / minimize dervation. Derivation, that is, the desire of the bullet to fly with the back side forward (since the bad part is harder) will be stronger, the farther the bullet flies and the slower it rotates. It’s clear that you can’t shoot with a short barrel, so it is not necessary to change the pitch of the rifling. I would like to hear the opinion of experts on this issue.
      1. Vladimirets
        Vladimirets 27 June 2013 14: 17 New
        +1
        Quote: bazilio
        each cartridge has an optimal value for the speed of rotation of the bullet in flight, determined by the mass of the bullet, its speed and so on. therefore, the shorter the barrel, the steeper the cut should be, in order to give the appropriate rotation.

        With a sufficiently powerful cartridge, you can’t make too sharp cuts, a bullet can simply be ripped off from them. In general, I had to hold in my hands a hunting German double in which there were no rifling at all in the barrel under an 8mm cartridge, a pretty good fight for non-critical distances.
        1. bazilio
          bazilio 27 June 2013 15: 48 New
          +1
          Quote: Vladimirets
          8mm there were no rifling at all, at a non-critical distance quite a good fight.

          you see, the question cannot be so easily solved; only by miscalculations can it be determined. Comrade Riot has a good command of the issue from a technical point of view, maybe he will tell
    2. StolzSS
      StolzSS 27 June 2013 21: 41 New
      +1
      Of course there is. it’s not a shotgun that’s just to be sawed off ... and the cutting is adjusted to the length, but this is the secret of the manufacturer, they don’t write this in the advertising booklet ....
    3. Mister X
      Mister X 27 June 2013 22: 39 New
      +2
      Quote: Vladimirets
      Interestingly, do variants with different trunk lengths have differences between the trunks except the length? Well, for example, thick-walled, rifling pitch. Or just sawing trunks?


      I think they’re just sawing. Here is the translation from the manufacturer’s manual:

      Although REPR is designed to use a wide range of
      ammunition, but it is optimized for the use of bullets with heavy bullets.
      With regard to the description of rifling in the trunks, this phrase may apply:
      With a 1-in-10 inch rate of rifling, the barrels are designed to stabilize heavy bullets up to 190 grains.
      It was possible to translate only the second half of the phrase:
      “To stabilize heavy bullets weighing up to 12,4 grams (190 gran)”

      The weapon is designed for firing new M118LR rounds with bullets like
      Sierra MatchKing weighing 11,34 gr. (Xnumx gran)
      For optimal firing accuracy, the manufacturer recommends the use of sniper cartridges.
      Federal Gold or Black Hills Gold Medal Match (GM308M) with 11,34 gr. (Xnumx gran).

      Shooting accuracy will suffer if rifles with short barrels are used.

      For trunks, NiCorr is used, which is better than chromium.
      NiCorr is a more wear-resistant material, has a lower coefficient of friction,
      less degraded by high temperatures, and more resistant to corrosion.

      For processing moving parts, the coating uses NiBor based on Nickel and composites,
      which serves as a permanent lubricant and promotes smoother movements during
      translational movements of mechanisms.

      For weapons obsessed with tuning, versions with a spiral surface of trunks are produced
      LWRCI REPR 16" Special Carbine W/Spiral Fluted Barrel

      1. alex-cn
        alex-cn 28 June 2013 14: 17 New
        +1
        With a 1-in-10 inch rate of rifling, it is 1 revolution (rifling) per 10 inches
  5. Alexey Prikazchikov
    Alexey Prikazchikov 27 June 2013 12: 27 New
    +2
    Yeah, that's what happens when 2 imeria compete with each other and quite peacefully. You’ll think about both ak and m-series for more than half a century, and what a huge potential was invested in them, that on their basis so far everything has been riveted. I think we will all still remember the Cold War as probably the happiest time of the people.
    1. bazilio
      bazilio 27 June 2013 13: 48 New
      +3
      Quote: Alexey Prikazchikov
      You’ll think about both the AK and the M-series for more than half a century, and what a huge potential has been invested in them, which on their basis are still so much riveted.

      there is not so much potential, there is rather a lack of a suitable alternative with other systems of hand weapons. In fact, now all efforts have come down to the refinement of inventions half a century ago. Improve by applying more advanced materials, manufacturing accuracy, new ammunition. Until viable weapons samples appear that use not the energy of powder gases, but other physical principles (railguns, lasers). we will continue to observe such a modernization.
  6. Andrey77
    Andrey77 27 June 2013 13: 30 New
    +2
    Самое интересное в этой винтовке - переключение между самозарядкой и классическим "болтом". Автор сделал акцент на планку "пикатинни", приклад и прочее, а о самом главном - мельком в конце статьи. Минус.
  7. MASTER (MPS)
    MASTER (MPS) 27 June 2013 16: 29 New
    +1
    beautiful rifle
  8. Sour
    Sour 27 June 2013 16: 43 New
    +2
    Switching the mode from self-loading to manual can not only give improved accuracy (although this is certainly the main thing), but also noise reduction. Suppose you use a silencer when shooting. It significantly attenuates the sound from powder gases, but does not remove the sound from the operation of rifle automation (especially from a moving shutter). When shooting from a position where witnesses can be close, this can play some role, because in complete silence the sound from the shutter is audible enough. Disabling automatic reloading can reduce the sound when shooting to a minimum.
    1. Raphael_83
      Raphael_83 27 June 2013 18: 00 New
      +3
      Ааа! Опередили... А если серьезно - сам про это подумал, как прочел о возможности "вырубить автоматику".
      A similar solution was used by the Chinese in Type 64-67 pistols, which made it possible to make the shot almost silent. hi
  9. Pablo_K
    Pablo_K 27 June 2013 16: 44 New
    +1
    A 323mm barrel under such a cartridge?
    the crop is obtained.
    Quote: Andrey77
    Самое интересное в этой винтовке - переключение между самозарядкой и классическим "болтом". Автор сделал акцент на планку "пикатинни", приклад и прочее, а о самом главном - мельком в конце статьи. Минус.

    I agree about the most interesting not a word
  10. The comment was deleted.
  11. Mister X
    Mister X 27 June 2013 18: 14 New
    +2
    Most often in the descriptions of Rapid Engagement Precision Rifle (depending on the length of the barrel) there is such a marking:
    REPR 12 - 12.7 ”(323mm)
    REPR 16 - 16 ”(406mm)
    REPR 18 - 18 ”(457mm)
    REPR 20 - 20 ”(508mm)

    Another distinguishing feature of this product is the presence of a gas regulator.
    As far as I know, out of all related models, the regulator has only
    AR-10 SuperSASS. For the rest, this is an option.
    For models of the AR-15 family, this is also an option. Price tag: 100 bucks.
    The average price of REPR in the basic configuration of $ 3500

    The controller has 4 positions:
    N (Normal): For shooting with army sniper cartridges M118LR or FGMM with a bullet weight of 168 gr.
    C (Closed): For firing bullets at subsonic bullet speed.
    S (Suppressed): For firing with PBS.
    A (Adverse): To reduce the rate of fire: adverse conditions (extremely low or high temperatures, pollution) or ammunition saving.
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    3. Mister X
      Mister X 27 June 2013 18: 24 New
      +2
      In my opinion, the design is quite delicate, if not flimsy.
      The upper cover on the forend (overlay on the vent pipe) is made of plastic.
      The stock, pistol grip and stores are borrowed from Magpul and B5 Systems.
      Perhaps the entire plastic kit from them (except for sights).



      The gas piston is not connected firmly to the vent pipe:
      stuck the piston into the tube and propped up with a spring.



      And to disassemble and clean REPR is one “pleasure”: a lot of small details.







      1. The comment was deleted.
      2. Mister X
        Mister X 27 June 2013 18: 31 New
        +1
        Shooting from Rapid Engagement Precision Rifle with PBS
        single shots in manual reload mode.

  12. bootlegger
    bootlegger 27 June 2013 18: 21 New
    +1
    The decision to turn off the automatic system should bring the self-loading rifle as close as possible to the bolt in accuracy. Because bolt rifles, in fact, differ from self-loading only in that they do not move the mass of the bolt and the bolt frame during the shot. rifles.
    The other is not clear.
    Why can not make a design with a delay in the operation of automation?
    So that the bolt would start moving not when the bullet is still in the barrel, but a fraction of a second later? Then, when the bullet leaves the barrel and the movement of masses will not affect its movement?
    For example, you can make a store of powder gases discharged from the barrel, which with a delay will transfer gases to the piston connected to the bolt frame ...
  13. Andrey77
    Andrey77 30 June 2013 11: 43 New
    0
    The author (Karasik Kirill), laying out the article in the sniper section, you must first specify the accuracy. Preferably in the MOA. Thanks Mr. X. The device of the rifle is exciting, but in the third place.