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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 04:02
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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    sven Sven ukaž člověku smrt a smíří se s horečkou 26.10.2024 20:46 - Odhlášení (14:59) 34443
    El_Diablo 34442Děkuji za odkaz, kde to Ian docela dobře komentoval!
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 26.10.2024 14:22  34442
    Sven [34441]: El_Diablo [25794]:
    sven Sven ukaž člověku smrt a smíří se s horečkou 25.10.2024 16:57 - Odhlášení (14:59) 34441
    francouzský kompaktní samopal ze 40-50-tých let.MGD PM9Neobvyklá, ale docela zajímavá konstrukce, která by podle mého soudu stála za otestování!
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 25.10.2024 16:18  34440
    Semiauto MGs: How Are They Made?



    Semiauto versions of machine guns are a way to have examples of historically significant and mechanically interesting guns without having to wrangle with NFA transfers and the astronomical price of transferrable legal machine guns. However, they are not particularly common. Very few OEM manufacturers make semiauto versions of military machine guns (FN USA being the best example of one who does, followed by Ohio Ordnance). Most of them are made from parts kits by small entrepreneurial gunsmiths - like Smith Manufacturing Group, Midwest Metal Supply, and others. As parts kit supply waxes and wanes, the options available change accordingly (at one time, we have semiauto MG34 and MG42 options, because parts kits with barrels were readily available).

    In today's video, we are going to look at how these semiauto creations are done. The three main steps are creating a new receiver, ensuring that it is a semiauto receiver and not legally considered a machine gun itself, and then converting the gun in question to fire from a closed bolt. There are two standard ways to do that conversion, and we will look at examples of both.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 23.10.2024 17:30  34439
    Legacy of the K5: Daewoo DP51 Through Lionheart Vulcan-9

    The South Korean military was using old Colt M1911A1 pistols in the 1980s, and as they became worn out a new pistol was needed. This would be something designed and built domestically, and chambered for 9x19. The small arms division of the massive Daewoo industrial conglomerate, called Daewoo Precision Industries, spent several years in the mid 80s designing what would be adopted in 1990 as the K5 pistol. It took elements from the Beretta 92 and 3rd-generation S&W automatics, and the "fast action" trigger mechanism from FN and combined them into a compact, reliable duty pistol.

    The "fast action" trigger, also called "triple action" or "double action plus" is a DA/SA trigger in which the hammer can be manually pushed forward after being cocked. This gives the system a hybrid trigger pull, with the weight of single action but the length of double - theoretically ideal for carry.

    Daewoo imported K5 pistols to the US until 1997 through several different importers under the designation DP-51 (and also the DP-51C compact and the DP-40 in .40 S&W). By the late 90s Daewoo was in financial trouble, and the small arms division was eventually spun off into a separate company, called S&T Motiv. They began importing the K5 again circa 2012, not designated the LH9, through US company Lionheart Industries. Lionheart moved form importing the guns to manufacturing them in Washington in 2016, renaming them the Regulus and adding better sights, slide serrations, frame texture, and other commercial options. Lionheart was subsequently sold to a new US owner and its manufacturing moved to Georgia, where it was again renamed as the Vulcan 9 and released in 2023.

    The Vulcan-9 remains mechanically the same as the original K5, but offers a variety of modern options, including threaded extended barrels and optics cuts. It's still a relatively compact pistol, but one that is now pretty well loaded with features (albeit for a quite high price).

    Thanks to Lionheart for loaning me the three iterations of their company's pistols for this video!
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 21.10.2024 15:54  34438
    MP9 and TP9: A Complete History From Steyr to B&T

    Steyr introduced their TMP (Tactical Machine Pistol) and its semiauto SPP counterpart in 1989, but it was never a very popular item. After the company was purchased, the new ownership decided to scrap the TMP (along with other low-performing product lines). At that point, Swiss firm B&T purchased the whole project for a nominal one Austrian Schilling and began to develop it themselves. B&T made a number of reliability improvements to the basic design, and perhaps most importantly added a folding stock to what had previously been a machine pistol design. They now offer it as a semiauto civilian pistol or carbine, and as a PDW or submachine gun to military clients. It has been adopted by a number of units around the world in a variety of roles including pilot survival weapon, maritime boarding party armament, and compact special forces SMG.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 20.10.2024 23:33  34437
    Why The 5.56 AK Is My New Obsession - The AK-102
    I've had great success with PSA AK's up to this point. Any failures I've ever had from a PSA Ak comes usually from the firing pin. in todays episode we mod out an AK 102 and push it to its limits.

    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 16.10.2024 19:04  34436
    RP-46: The Rarely Seen Belt-Fed Degtyarev



    After World War Two, the Red Army moved from a full power infantry rifle cartridge to an intermediate one, and the 7.62x39mm RPD became the new squad machine gun. At the same time, the heavy Maxims were replaced by the new SG-43 Goryunov. This left a gap in capability, with nothing available with full-power punch and reasonable mobility. To solve the problem, a team of three engineers (A.I. Shilin, P.P. Polyakov, and A.A. Dubinin) developed a clever adaptation to allow the DP/DPM machine gun to use belted ammunition (using standard Maxim/Goryunov/PK belts). They created a belt feed module that attached to the gun just like a magazine; simple and cheap to convert existing guns. This was adopted in 1946, and would serve until replaced by the PK in 1961. In addition to Soviet production, the design was also produced in China and North Korea.

    In addition to the belt feed, the RP-46 featured a few other changes to better handle sustained belt-fed fire. The gas tube and front magazine catch were strengthened. A folding shoulder support was added to the buttstock. The bipod legs were modified to hold a 4-part segmented cleaning rod. A heavy barrel was fitted, and a much heavier gas block with three adjustable positions. The barrel release button was enlarged and fitted with a lockout lever to prevent accidental barrel release.

    Information on how many RP-46s were made and how/where they were used is very difficult to find. The RP-46 is seen in very few period photos, and surplus stockpiles of them never have seemed to turn up. It’s really quite odd how little information and experience seems to exist on these guns, which does make one wonder if perhaps they were not actually made in large quantity, or if they were destroyed for some reason instead of being stockpiled like most obsolete Soviet arms.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 14.10.2024 19:13  34435
    sa81 KRASA: Czechoslovakia's Ultra-Compact Lost PDW

    The Krása project (which translates as "beauty", but is also a shortening of "short assault rifle" - "KRÁtký SAmopal") is a fascinating piece of Czech small arms development. In 1976, the Czechoslovakian military requested development of a compact personal weapon for special troops (paratroops, armored vehicle crews, etc) and unit commanders. It was to be chambered for the standard 7.62x39mm cartridge, but it should be no more than 1.6kg (3.5lb) empty and just 270mm (10.6") long when folded.

    The project was tackled by Jiri Čermák, who was the designed of the vz58 rifle. He began by simply shortening a vz58 as much as possible, but that was not sufficient to meet the goals. So he went on create a new rifle with a radically different feeding system. Instead of pushing rounds forward out of the magazine, it would pull them rearward, like a Mars or Boberg pistol (or like the North Korean Type 73 machine gun). This required a very different type of magazine, but allowed Čermák to create a functional weapon that was close to the requested size - 315mm (12.4") long and 2.1kg (4.6lb).

    The first prototype was designed in late 1980, and two examples were made in 1981, designated the sa81. After only a small amount of function testing, the project shifted to use the new 5.45x39mm cartridge. One example in that caliber was made, the sa83, in 1983. However, the project was cancelled at the end of 1983 in favor of the new Lada program, which planned to create a complete new family of small arms. Lada was in turn cancelled by the fall of communism, and eventually replaced by the short-lived CZ2000 family in 5.56x45mm.

    The Krása project made a brief comeback around the same time as the CZ2000, called project HROM. It uses the exact same mechanism, but with distinctive elements from the Lada/2000 guns like the sights and furniture. That project also was cancelled after just a couple prototypes.

    In my opinion, the reverse-feeding concept remains a fascinating potential solution for an ultra-compact PDW. Seeing someone finish its development using a cartridge like .300 Blackout today would be awesome...

    Thanks to the Czech Military History Institute (VHU) for graciously giving me access to this one-of-a-kind prototype to film for you! If you have the opportunity, don't miss seeing their museums in Prague:
    https://www.vhu.cz/en/english-summary/
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 12.10.2024 16:47  34434
    Leaning Westward: Galils for Estonia


    When Estonia regained its independence from the Soviet Union in 1991, it was initially armed with a wide variety of miscellaneous small arms. They clearly needed a primary standardized rifle for the new armed forces. The one definitive criteria for making a selection was than the new rifle must be chambered for the 5.56mm NATO cartridge, as Estonia knew from the beginning that its long-term survival as an autonomous state depended on joining the NATO alliance.

    In 1994, Estonia put out an official tender for rifles, and it only received viable offers from two places: Vektor in South Africa, and IMI in Israel. Estonia had neither much money nor much credit history (so to speak), and the larger European manufacturers were wary of contracting with them. Between the two offers (both for Galil rifles), the Israeli was deemed better, and Estonia proceeded to purchase about 12,000 Galils from IMI. The significant majority were full length AR type, but there was also a small subset of compact SAR carbines in the purchase. These rifles served as the service rifles for the full-time professional element of the Estonian military, with annual conscript levies using a variety of other weapons (largely H&K G3 variations). In addition, during Estonian NATO missions to Iraq and Afghanistan, the deployed units were all issued Galils if they did not already have them.

    In 2008, Estonia had a rifle modernization program that was the modification of most of the Galils with a package of upgrades. They were fitted with quad-rail hand guards (B&T), Aimpoint red dot optics, Aimpoint 3x magnifiers on B&T quick-detach mounts (affixed to the original Galil top covers), B&T vertical front grips, and domestic Estonian-made charging handle extensions. With these updates, the Galils continued to serve as Estonia's primary infantry rifle until the adoption of the new LMT R20 rifles starting in 2019.

    Thanks to the Supply Battalion of the Estonian Defense Forces for giving me access to these rifles and their history to film for you!
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 12.10.2024 13:40  34433
    Waffenwerke Brünn & the Czech Machine Guns of the Waffen-$$ (’38 – ’43)
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 11.10.2024 19:18  34432
    Estonia's Domestic Arms Production: Arsenal Tallinn SMG

    At the end of Estonia's war of independence in 1920, the new nation's government began working on military infrastructure. One thing it would need was a repair depot to maintain military equipment, everything from barracks furniture to arms and vehicles. A large building was obtained in Tallinn (the capital city) and a number of small shop moved to the new premises to work together. Over the 1920s, this central repair depot grew in size and capability, and in 1924 is was officially named Arsenal Tallinn. It is probably best known for the design and construction of a series of Estonian armored cars, but in 1926 it took up a project to design and build a submachine gun. Building on experience making replacement parts for other weapons, Johannes Teiman (head of the Arsenal technical department) put together a design based largely on the German MP18.I.

    The Tallinn SMG - which never had any more specific designation that I have been able to find - was simple blowback, used a progressive trigger fir semi and full auto firing, and was chambered for the 9x20mm Browning semi-rimmed cartridge. It fed from 50-round magazines that mounted at a slight backward angle to prevent rimlock. the design underwent a successful endurance test in November 1926, and slow mass production began. In total, about 630 appear to have been made (but that number is uncertain due to the 1940 destruction of Arsenal records). Most (437) went to the Estonian Defense League, with the remainder split between the Army and police.

    The 9x20SR chambering was chosen because at that time, the official service sidearm of the Estonian Defense Forces was the FN 1903 pistol, chambered for the same 9x20SR. In the 1930s these were replaced by FN High Powers in 9mm, and Arsenal developed a modification to convert the SMGs to 9x19. This modification was ready in 1938, but never put into production. Instead, the existing SMGs were sold (a few to Latvia but most to Spain) and the money used to purchase brand new Suomi KP31 submachine guns from Finland. It appears that 485 Suomi's made it to Estonia before the Winter War. The Tallinn guns sent to Spain had a very low survival rate, and complete examples are extremely rare today.

    Many thanks to the Estonian War Museum for allowing me to take this one out of their display to film for you. If you find yourself in Tallinn, definitely take time to stop by and check them out! Hours and rotating exhibits are available on their web site: https://esm.ee
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 9.10.2024 22:57  34431
    Only Footage of the Springfield 30-06 Prototype

    4.3. Prototype .30-06 Springfield Rifle

    It is estimated to have been manufactured in December 1943, and it is estimated that the overall appearance of the gun body has been extended and the buffer spring space has been expanded at the rear of the long barrel, and it is also estimated that the magazine of the M1918 Browning is compatible .
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 9.10.2024 21:46  34430
    This gun shoots round corners: M3 Grease Gun 'Deflector' with firearms expert Jonathan Ferguson

    This week Jonathan explores a firearm that bucks the trend... or the curve in this instance.

    Joining the company of weapons like the Krummlauf, this American prototype utilised the M3 Grease Gun for 90° firing.
    el_diablo El_Diablo Veškerá nepodstatná elektronická zařízen - mimo provoz, včetně kontroly pravopisu. 9.10.2024 20:27  34429
    Degtyarev Upgrades: DP27 vs DPM

    The Degtyarev DP (aka DP-27) was the subject of a bunch of experimentation during the 1930s, but none of the trialed modifications were actually adopted. It was only in 1944, after several years of combat experience, that the design was updated to correct a number of shortcomings. Specifically:

    The recoil spring was moved away from the gas piston and up behind the bolt to prevent its overheating.
    The traditional stock and grip safety were replaced by a pistol grip and manual safety.
    The detachable bipod was replaced by a more permanently attached model.


    The DPM was a much better-handling gun than the original DP, and it maintained the simple disassembly and economical manufacturing of the original. The pan magazines remained a complaint because of their awkward handling, but no easy change was available for that during the war.

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