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Klub Zbrane [ŽP: 24 týdnů] (kategorie Věda a Technika) moderují Al, El_Diablo, ocs, themajkl.
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Domovská stránka aktualizována 2.12.2019 05:02
Omlouvám se ale bohužel jsem musel zakázat psaní anonymům, protože nám tu nějaký sabotér vložil "hack" kvůli kterému nešlo přispívat nikomu. Nevím jestli to pomůže, ale snad nad tímto darebákem budeme mít větší kontrolu.
Srdečně zveme do tohoto klubu všechny, kteří se zajímají o zbraně, střelbu a všechno, co s tím souvisí a chtějí si o tom všem v přátelské atmosféře povídat, poradit druhým, nebo se naopak chtěji zeptat na radu.

Kdo chce vystupovat anonymně (tj. bez registrace na Lopuchu), musí si vymyslet nějaké jméno nebo přezdívku a psát ho do každého svého anonymního příspěvku.

Každého přece musíme v diskusi nějak oslovovat, aby bylo jasné, kdo na koho reaguje. Kdybychom měli odpovídat několika bezejmenným anonymům najednou, byla by diskuse značně nepřehledná. Takže, kdo neuvede jméno či přezdívku, ten jako by nebyl.

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  •  Výslovně zakázány jsou pouze urážky (je jedno koho), nesmyslné hádky a extrémně vulgární příspěvky.

    Video Alova prototypového samopalu
    Early Automatic Pistol Cartridges - What, When & Why?
    Cowboys



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    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 29.6.2025 20:41  35046
    Jonathan Ferguson: British Military AR15s & Flintlock Revolvers

    Jonathan's book, "Thorneycroft to SA80":
    https://www.headstamppublishing.com/b...

    "Clockwork Basilisk: The Early Revolvers of Elisha Collier":
    https://www.headstamppublishing.com/c...

    "Who Invented the Wheelgun?":
    https://www.headstamppublishing.com/p...

    Armax Journal:
    https://www.armaxjournal.org

    Jonathan's flintlock revolver article:
    https://www.tandfonline.com/eprint/A5...

    Jonathan's Dafte revolver article is not currently available online, unfortunately.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 26.6.2025 19:10  35045
    Děkuji za upřesnění
    j_j J_J 25.6.2025 22:48  35044
    Aha, tak mám pravdu jen částečně: se samopalem se počítalo i v některých střílnách LO v členitém terénu, kde by se střílelo na velmi krátké vzdálenost, kde byl náboj 8x57 overkill.

    https://ropiky.net/clanky_item.php?id=1162928566
    j_j J_J 25.6.2025 22:28  35043
    To s tím opevněním je trochu jinak. Se samopalem se tam počítalo pouze pro ochranné střílny u vchodů, kde jedinou reálnou alternativou bylo používání pistolí. Vchodové střílny byly malé a nemají zevnitř žádnou přípravu na permanentní lafetaci čehokoli. Ve většině případů se za tu střílnu střelec s klasickou dlouhou zbraní ani nevejde. Navíc ta samotná střílna je opravdu nouzová, protože čs. opevnění používalo systém bočních paleb a týlový prostor byl v palebném vějíři minimálně 2, častěji i více, kulometů sousedních objektů.

    U těžkých objektů byl prostor před objektem u vchodu bráněn alespoň jednou standardní střílnou s bajonetovým úchytem pro LK vz. 26 a tam se o nějaké náhradě samopalem pokud vím nikdy neuvažovalo.

    https://ropiky.net/clanky_item.php?id=1584736217
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 25.6.2025 19:42  35042
    Samopal vz 38: Czechoslovakia's Interwar Drum-Fed SMG in .380

    Military interest in a submachine gun was late in Czechoslovakia, but by the late 1930s a development program was put into place. Interestingly, the main use case for an SMG was seen as being a replacement for a rifle-caliber LMG in fortification mounts. The thought process seems to have been that a large volume of fire was the necessary element to keep invaders away from border fortresses, and the ballistic power of the fire was not so important.

    The vz38 was designed by František Myška, chambered for the 9x17mm (.380) cartridge used by the vz22/24 pistol then in service. It was tested against the ZB26 light machine gun. It proved reliable and effective, and it's 96-round drum magazine (copied format he Finnish Suomi) was a particularly nice element. An initial order was placed and the gun was formally adopted into service, but production never began. Instead, German occupation of the country put an end to the project and only 20 preproduction examples were ever made.

    Many thanks to the VHU - the Czech Military History Institute - for giving me access to this very rare example to film for you. The Army Museum Žižkov is a part of the Institute, and they have a 3-story museum full of cool exhibits open to the public in Prague. If you have a chance to visit, it's definitely worth the time! You can find all of their details (including their aviation and armor museums) here:

    https://www.vhu.cz/en/english-summary/
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 23.6.2025 17:33  35041
    Galand de Guerre Model 1872: Too Good for the Military

    Charles François Galand is best known for his simultaneous-extraction Model 1868, but he also developed a very good solid-frame revolver. This was specifically for the French 1871 military trials, which specifically required a solid frame. The Galand was chambered for 12mm Galand (with its distinctive very thick rim), held 6 rounds, operated in either single or double action, required no tools to disassemble, and had very simple but durable lockwork. The gun was very good, and was a very tight competitor for the other trials finalist, the Chamelot-Delvigne. Ultimately, it lost out because it was the more expensive of the two options.

    For more information on the Model 1873 Chamelot-Delvigne that won the French trials, I suggest the C&Rsenal video on that model:
    History of WWI Primer 061: French and Ital...
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 18.6.2025 16:17  35040
    Swedish Kulspruta m/36 Double Browning MGs

    Despite being a neutral power during World War Two, Sweden had a variety of very interesting small arms - like their dual-mount Browning m/36 machine guns. These were originally adopted because the Swedes wanted a heavier medium MG cartridge and didn't think their delayed-blowback Schwarzlose guns could handle it. The cartridge was 8x63mm, pushing a 219 grain projectile at 2500 fps. The m/36 Browning was a water cooled gun, an improvement on the older M1917 design. It not only handled the powerful new round, but it could also be easily swapped to the older 6.5x55mm round to use stocks of existing ammunition (and it would be later adapted to 7.62mm NATO as well). Most of the guns were built as matching pairs for antiaircraft use, with mirrors left and right side feeds and in effective recoil-absorbing cradle mounts.

    Special thanks to Bear Arms in Scottsdale, AZ for providing access to this rare pair of guns for today's video!
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 17.6.2025 01:33  35039
    The Mystery Rifle Returns with Firearms Expert Jonathan Ferguson

    Over two years ago, Jonathan introduced a strange prototype rifle, a complete unknown pulled from the shelves of the Ministry of Defence Pattern Room. No label, no provenance, and a mechanism unlike anything else in the collection.

    This week, the mystery comes full circle.

    0:00 Intro
    0:47 Literally Labelled “Unknown”
    1:10 Toggle Joint Recoil
    1:45 Clues from the Cartridge: .400/375 Nitro Express
    3:00 Dating the Design: 1905–1920
    3:25 Possible Inspirations and Patent Digging
    4:25 Holland & Holland Hunting Rifle
    6:10 Why Did it Fail?
    7:30 The Label Comes Off (For Good)
    7:47 Outro

    Patent: https://worldwide.espacenet.com/patent/search/family/035253188/publication/GB190806843A?q=GB190806843A
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 16.6.2025 20:04  35038
    Prodynamic II: A New High-End Competition Pistol

    Proarmis is a Slovenian pistol manufacturer that has introduced a new high-end competition pistol (priced at approximately €4000). The first example has arrived in the US, and I had the chance to borrow it for some filming. The gun handles very well, and has a really remarkably adjustable trigger - the user can adjust basically every aspect of weight, travel, and over travel as either a single-stage or 2-stage setup. It's a pleasure to shoot, but the quality is more than I can fully exploit myself. A commercial batch of Prodynamic II should be arriving in the US shortly...
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 14.6.2025 00:07  35037
    Bat Masterson's Guns - Hollywood vs History


    In this video we’ll take a look at the guns used by one of the most famous gunmen of the Old West, Bat Masterson.

    I’ll be looking at the guns carries by Gene Barry when he portrayed Masterson in the television series “Bat Masterson”, and I’ll look at the guns actually used by the real Bat Masterson in the 19th century.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 11.6.2025 20:55  35036
    AR-1 "Parasniper" - The First Armalite

    The first rifle produced by Armalite began in 1952 as a project between the brothers-in-law, Charles Dorchester and George Sullivan (no relation to later Armalite engineer L. James Sullivan). Sullivan is the chief patent attorney for the Lockheed aircraft company, and the two have the idea to produce an ultra-light rifle using aircraft industry materials like fiberglass and aluminum. They create a company called SF Projects and get to work using Remington actions. They fit aluminum (and then later aluminum/steel composite) barrels and foam-filled stocks and the result is a rifle that weighs less than 6 pounds with a 4x scope fitted. The first ones are chambered in .257 Roberts, but this shortly gives way to the new .308 Winchester cartridge.

    Sullivan and Dorchester make a connection with Richard Boutelle, who is very much a "gun guy" himself and also head of the Fairchild aircraft company. The idea of the rifle appeals to Boutelle, and Fairchild was looking to diversify its operations - and so Fairchild agrees to buy SF Projects, renaming it the Armalite Division of Fairchild.

    The idea of the rifle was for civilian hunters who want a gun that is light to carry for long distances and also military specialists like airborne troops who need lightweight gear. The Army tests the AR-1 in 1955 and finds some fairly serious problems with it. There are reliability issues, and also accuracy shortfalls. When the composite barrel heats up, differential stresses cause the point of impact to shift. This foreshadows the catastrophic failure of a composite barrel in AR-10 testing, but that is a story for another video. Ultimately after two rounds of testing the Army rejects the rifle, and that is pretty much the end of it. Armalite moves its focus to other projects, namely combining aircraft industry materials with the self-loading rifle of their other designer, Eugene Stoner. That, of course, will become the AR-10.

    Since I know folks will ask, the AR projects between 1 and 10 were thus:
    AR3: Stoner-type rifle in hunting configuration
    AR5: Air Force survival rifle
    AR9: Shotgun
    The designations 2, 4, 6, 7, and 8 were set aside to drawing board projects that never materialized.

    Thanks to the Springfield Armory National Historic Site for giving me access to these rare specimens from their reference collection to film for you! Don't miss the chance to visit the museum there if you have a day free in Springfield, Massachusetts:
    https://www.nps.gov/spar/index.htm
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 9.6.2025 20:19  35035
    A Modern Stocked Pistol: B&T's Universal Service Weapon (USW)


    The genesis of the B&T USW was a two and a half hour car ride home from a youth hockey game, when Karl Brugger and a friend were thinking about how to improve police effectiveness with handguns. What would make a handgun more accurate in practice? Clearly a red for and a shoulder stock. So how does one add those elements to a pistol while maintaining easy carry in a service holster? The answer was the USW.

    The first prototypes were built on AT-84 Sphinx pistols (a Swiss-made copy of the CZ75). The first production run used Sphinx components, but with newly made frames and slide that incorporated cocking surfaces forward not he slide and an extension off the frame to mount the side-folding stock and Aimpoint Nano optic. Only a few of these were made, as the project was never all that popular.

    Other experiments included conversions for other pistol models, with the SIG P320 being the most practical. Clamp-on conversion kits were made for guns like the CZ P10, Walther PPQ, and Glock.

    Perhaps the most influential outcome of the project was the optic. Aimpoint originally developed the Nano as B&T's request, but in the original form is was not nearly as reliable as Aimpoint desired. It was iterated and ruggedized (and renamed to avoid a lawsuit over the Beretta Nano pistol) and became the very successful Aimpoint Acro.

    My 2022 Desert Brutality match with a USW-320:
    Evaluating the Modern Stocked Pistol: USW-...
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 7.6.2025 19:23  35034
    H&K MG4: Germany's New 5.56mm Squad Machine Gun


    Heckler & Koch released the MG4, a new 5.56mm squad machine gun in 2001. It was adopted by the German army in 2005, and then by the Spanish and Portuguese armies in 2007. Alongside its sister weapon the 7.62mm MG5, it is H&K's current export machine gun.

    The MG4 fires from an open bolt, with a 2-lug rotating bolt locking system and a long stroke gas piston operating system. It uses standard M27 NATO links for feeding, and does not have a semiauto selector setting. Mechanically, the MG4 uses a front trunnion into which both he barrel and bolt lock independently - meaning that the quick-change barrel can be removed with the bolt in either the forward or rearward position.

    As one would expect for a 5.56mm machine gun weighing 18 pounds, it is very easy to control.

    Thanks to Sellier & Bellot for giving me access to this modern machine gun to film for you!
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 6.6.2025 17:01  35033
    "Kevin" - A Czech Pocket Pistol With a Weird Delay Trick

    The "Kevin" (sometimes called a ZP-98) was developed by Czech gunsmith Antonín Zendl and introduced at the IWA show in 2007. It was a micro-compact pocket pistol chambered for either .380 ACP or 9mm Makarov (the Kevin M). It held six rounds in its magazine, and the most notable feature is a pair of gas vent holes just in front of the barrel. These blow gas against the slide, maybe delaying its opening - and also reduce chamber pressure and velocity to reduce felt recoil.

    In 2008, the design was licensed to Magnum Research in the US, who marketed it as the Micro Desert Eagle (because everything from Magnum Research must be somehow linked to the Desert Eagle). The Czech manufacturer went out of business in 2013, and the guns do not appear to be in production any longer in either country.

    Thanks to Sellier & Bellot for giving me access to this pair of interesting pistols to film for you!

    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 5.6.2025 01:32  35032
    Gerat Potsdam: Mauser Copies the Sten Gun

    In the fall of 1944, the Mauser company was given a contract to develop drawings of a direct copy of the British Sten gun (code named Gerät Potsdam), and to manufacture 10,000 of them. In fact, they were to make two different sets of drawings; one suitable for large factory use (like their own) and one for use with distributed small shops making parts for final assembly elsewhere (which is how much of British Sten production was done). The contract was fulfilled and 9972 guns in total were produced and accepted by the German military in November and December of 1944.

    Why would Germany was a copy of the Sten? Well, they actually had a decent number of them. The Allies were air-dropping Stens all over Europe, and a lot of those drops were captured by German troops, not the resistance fighters they were intended for. By the end of the war the Germans were in desperate need of arms, and the Sten was both simple and already in some German use with the Volkssturm…so it actually was not a totally unreasonable idea to produce more of them.

    Today, the Potsdam is an extremely rare gun to find. The two visible identifying features are the magazine well and barrel shroud, which are both made with a folded and spot welded seam. The barrels are also identifiable as they have 6 groove rifling, which the British did not use in the Sten.

    Before the Potsdam production was finished, Mauser began working on further plans to simplify the design. That would be the Gerät Neumunster, aka the MP 3008. For that part of the story, see my video on the MP 3008:
    German Sten Copy: MP 3008, aka Gerät Neumü...

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