3D: How a FN SCAR 17S / SCAR-H Rifle works

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  • Опубликовано: 25 окт 2024

Комментарии • 27

  • @caribreeze
    @caribreeze 2 года назад +16

    props to the engineering and mathematics that made this possible. guns are one of the most incredible tools i've seen, the engineering that goes into each gun can be seen in its optimality, and regardless of optimality ive always been a fan of the scar.

  • @aquaisuseful682
    @aquaisuseful682 Год назад +5

    Thank you, I just ordered mine and had to see how the short stroke piston worked. So cool,

    • @3DGunner
      @3DGunner  Год назад +1

      Thank you! 3DGunner

  • @benjamincooper8229
    @benjamincooper8229 Год назад +2

    This is one my favorite guns and this thing can be used to hunt with

  • @imarginacionmxd
    @imarginacionmxd 4 года назад +7

    Your content is great!

  • @vardansarkisyan3027
    @vardansarkisyan3027 Месяц назад

    Its always amusing to realize how genius and crafty humans become, when they want someone dead 😂itsgonna be a long working year until i buy my own scar :)

  • @mc9069
    @mc9069 2 года назад +2

    Very neat. Thank you for this.

  • @2wEntEe
    @2wEntEe 3 года назад +3

    The bolt starts moving back before the gas expansion?

  • @luckyduckydrivingschool3615
    @luckyduckydrivingschool3615 2 месяца назад

    Seems like a lot of reciprocating mass... but I guess that's the tradeoff with a short stroke, and you don't need as much recoil spring/damping like in the AR-15

  • @RenanDavidSoriaAhumada
    @RenanDavidSoriaAhumada 8 месяцев назад +1

    didnt those oppenings in the upper carrier became an weak point
    making the use of the short piston useless?

    • @Fatal_Inertia
      @Fatal_Inertia 2 месяца назад

      Not than I'm aware of, I have never seen anyone have a failure due to the receiver vents

    • @RenanDavidSoriaAhumada
      @RenanDavidSoriaAhumada 2 месяца назад

      @@Fatal_Inertia i was thinking about sand and mud in dirty places

  • @jimminyxmas
    @jimminyxmas 4 года назад +1

    Great work thanks👍

  • @youtuber12148
    @youtuber12148 Год назад

    Is the rate of fire of FN SCAR 550-650 RPM due to the long bolt stroke as shown in the video?

  • @EricFra
    @EricFra 2 года назад +1

    The primer is intact...

  • @dodoservicesxbox3608
    @dodoservicesxbox3608 3 года назад +2

    thank god finally a video that isnt shit tier quality. ive never really cared enough to actually learn exactly how scars work just because ive never been to big of a fan of them. and i can see why most people say long stroke piston systems are more reliable aswell. still a cool and good rifle tho

  • @QASDERYG
    @QASDERYG 10 месяцев назад

    За весь этот просмотр было выпущено менье 27 патрон

  • @seansoraghan3486
    @seansoraghan3486 4 года назад

    Cool

  • @GeorgeCowsert
    @GeorgeCowsert 2 года назад +1

    Ok, I have to say it.
    The SCAR is a very poorly engineered rifle, and incredibly overpriced.
    *It is a short-stroke piston system, and yet it has a massive extension to reach the actual piston when it could and SHOULD have the piston just extend back, which helps with overall recoil control and barrel harmonics.
    *For no reason, it has its charging handle located above the ejection port. This makes for extra machining for minimal benefit, as the easy way to get an ambidextrous ejection system is just have the charging handle able to be attached to the other side and have a plate cover up the unused ejection port. It is cheaper, easier, faster, and leads to less holes that dirt and dust can get into.
    *Despite having loads of polymer, FN has hiked up the price to ridiculous levels when we all know damn well that thing is worth 2k at absolute most.
    The only issue I can even give a pass to for the SCAR is the spring assembly, but that's solely because loads of other firearms do the exact same thing without realizing that there is an infinitely better way, which I need to do a brief history lesson to explain.
    So, when Armalite sold the design rights of the AR15 to Colt, they lost access to the Direct Impingement system and borrowed a design Eugene Stoner made for them known as the AR-16, which was a .308 version of what Armalite redesigned into the AR-18. This was among the first designs to use a short-stroke piston, and the first to implement a guide-rod recoil spring assembly.
    And the funny thing is, the AR18 had two guide rods, meaning the bolt itself did not need to touch the walls of the receiver in order to function; and that reduced friction and thus the capacity to jam.
    A mistake so many modern firearms do nowadays is only use one guide rod, and use the receiver frame to keep the bolt assembly properly oriented. It's a cheap and effective way of doing it, but makes it vulnerable to the same jams that the AK-47 is vulnerable to, which very much do happen contrary to popular belief.
    If you have the money, don't buy a SCAR. Buy either an MSBS, or a G36 if TommyBuilt has 'em in stock. They're far better quality wise, and actually well engineered.

    • @TrollMeister-s6n
      @TrollMeister-s6n 10 месяцев назад +1

      Oh? And what have YOU ever built? I thought so...

    • @constantinethecataphract5949
      @constantinethecataphract5949 8 месяцев назад +1

      Yeah but having 2 guide rods and "not touching the walls" as you say makes the AR-18 only suitable for firing 5.56 The scar is a battle rifle. A battle rifle version of the AR-18 would be unstable especially in full auto, have tons of recoil making it unusable when it comes to accurate fire and it's internals would get all over the place because "they are not touching the walls"

    • @sT-gs7wd
      @sT-gs7wd 14 дней назад

      everything you wrote doesn't make any sense at all

    • @GeorgeCowsert
      @GeorgeCowsert 14 дней назад

      @@constantinethecataphract5949
      The AR10 makes 30 cal feel like 9mm. The SCAR H is utterly redundant, and the FAL and Draguniv both prove that the SCAR's op-rod is utterly redundant.