Heavy Sniper Rifles Grenade Launchers.

Discussion in 'Modern' started by CharlesBronson, Sep 17, 2009.

  1. CharlesBronson

    CharlesBronson Well-Known Member

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    A review to the modern antimaterial and long range antipersonel weapons.
     

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  2. CharlesBronson

    CharlesBronson Well-Known Member

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    #2 CharlesBronson, Sep 17, 2009
    Last edited: Sep 17, 2009
    One of my favorites:

    Mechem NTW-20

    [​IMG]

    This rifle was designed in the early to mid 1990s by South African arms designer Tony Neophytou, who also took its part in designing the Neostead combat shotgun. Initial development was under the Aerotek name, and later the Mechem division of the DENEL Group, a major South African arms manufacturer, purchased all rights for this design. In the 1998 South African National Defense Forces adopted this weapon and began to purchase it in some numbers. It is also offered for export sales.

    [​IMG]

    The NTW-20 is a long range anti-materiel rifle, developed to reach out across wide plains of South African landscape and to deliver substantial firepower in a relatively compact, two men portable package. It is available in two versions, 20mm and 14.5mm, and could be easily converted from one variant to another by simple replacement of the barrel, bolt, magazine and scope, which will take about 1 minute in the field conditions. These two versions had slightly different applications: 20mm version, built around WW2-era German MG 151/ 20 aircraft gun round ( 8) ), can deliver semi armor piercing, high explosive, fragmentation or incendiary shells with good accuracy, so a relatively "soft" targets could be disabled by the blast and / or fragments. When the long range and armor penetration is an issue, the 14.5mm version comes into the play. It is built around another WW2-era round, Soviet 14.5mm high velocity, armor-piercing cartridge, developed for PTRD and PTRS anti-tank rifles and still widely used in Russian KPV / KPVT heavy machine guns on armored cars and in anti-aircraft mounts.

    20x82 SAPHEI

    [​IMG]

    While probably not so accurate as the specially developed .50BMG (12.7x99mm) rifles, mostly due to unavailability of the "match grade" ammunition in the 14.5mm and 20mm, NTW-20 offers significantly more terminal effectiveness than any .50BMG rifle / round combination. 20 mm version could be most effective against targets like parked aircrafts and helicopters, command and communications equipment, radar cabins, fuel dumps, unarmored cars. 14.5 mm version will be more effective against armored personnel carriers or relatively large "soft" targets at extended ranges. Anti-personnel work is by no means a primary task for this huge rifle.

    [​IMG]

    NTW-20 is a manually operated, rotating bolt action rifle. The barrel is locked by the rotating bolt that has 6 lugs. The barrel along with the receiver could recoil inside the chassis frame against combined hydraulic and pneumatic damping system. Large two-chamber muzzle brake also helps to keep recoil at the acceptable level. NTW-20 is fed from the detachable box magazine, that is inserted from the left side and holds 3 rounds. The rifle could be disassembled and carried in two man-portable packs, each weighting about 12 - 15 kg. One pack carries the frame, stock, butt and bipod while the other carries the barrel, sighting equipment and magazines. NTW-20 is equipped with a 8X magnification, long eye relief telescopic sight on the quick detachable mount. No open sight are fitted by default. The folding bipod is mounted under the receiver, and a non-folding frame above the receiver serves as a carrying handle and a scope protection bracket.


    Caliber : 14.5 x 114 mm Russian or 20x82 Mauser MG151
    Function : manual bolt action
    Weight : 29 kg (without telescope sight)


    Official SÖLDNER - Marine Corps Gamesite

    ntw20


    Comparative tables, 14,5mm variant vs 20x82 mm.
     

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  3. vikingBerserker

    vikingBerserker Well-Known Member

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    Gees, now that's a gun!
     
  4. CharlesBronson

    CharlesBronson Well-Known Member

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    It is...¿ who said the antiarmor concept of ww2 was dead ?.

    Here you can see da gun firing in quick action, the recoil does not seem ( i repeat seem) so bad.
     

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  5. Matt308

    Matt308 Glock Perfection
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    Nice CB. But lower muzzle velocity for the 20mm makes is a different weapon with different missions than .50BMG. Good stuff though.
     
  6. CharlesBronson

    CharlesBronson Well-Known Member

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    Agreed, probably isnt as accurate for long range anti-sniping like the Barret M82or Accuracy AS50, however the "effect-on-target" capabilities of the 20mm ammunition are very good. Against cars, trucks, parked aircrafts, boats and so I would prefer the 20 MG151 round.



    View: https://www.youtube.com/watch?v=vXLRYf9EV2Y
     
  7. CharlesBronson

    CharlesBronson Well-Known Member

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    #7 CharlesBronson, Sep 18, 2009
    Last edited: Sep 20, 2009
    Barret M82a1:

    Since its introdution by the US military in early 1980s the M82 caliber .50 bmg ( 12,7x99mm in metric designation) has been used almost without change. The only modification was the new V shaped muzzle brake introduced in 1993. the rifle has been sold to several countries after gaining a fearsome reputation against enemy armored vehicles in the Desert storm operation in 1991.

    M82 with early type muzzle brake:

    [​IMG]

    The weapons is short recoil operated and it have 10 rounds magazine, the usual ammo for this rifle is the excellent norwegian Raufoss multipurpose ( a explosive-incendiary with aditional armor piercing capacity in the shape of tugsten-steel alloy core ).
    The rifle is manufactured by Barrett Firearms Manufacturing, Incorporated of Murfreesboro, Tennessee. The scope is manufactured by Unertl to match the trajectory of .50 caliber Raufoss Grade A (DODIC A606), which is the standard operational round. Weight of loaded weapon is 15 kilograms.

    Today is widely used in Irak and Afghanistan, mostly in the long range counter sniper role.

    Video: general characteristics and test shooting with Raufoss MK211 MP ammunition against several targets including 600 pd steel safe box.
     

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  8. CharlesBronson

    CharlesBronson Well-Known Member

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    #8 CharlesBronson, Sep 20, 2009
    Last edited: Sep 20, 2009
    Croatian 20mm RT-20

    The RT-20 was developed in the Croatia in the mid-1990s as a pure anti-materiel and anti-armor rifle. The RT-20 name means "Rucni Top, 20mm", that is "Hand Canon, 20mm". It is one of the most powerful anti-materiel rifles fielded by any army in the world today - the only others design roughly comparable to this monster in the terms of the caliber and effectiveness are the South-African NTW-20 rifle and the Finnish Helenius APH-20 (will be posted at this site later). The RT-20 had been successfully deployed during the war in the former Yugoslavia in the second half of the 1990s. It is manufacture by the Croatian company RH-Alan and is officially adopted by Croatian army.

    The RT-20 is built around the very powerful 20mm ammunition, originally developed for Hispano Suiza HS404 anti-aircraft round of WW2 vintage. This ammunition is still used in anti-aircraft guns in some countries for AA guns and generally available in HE (explosive) and AP (anti-armor) loadings, both suitable for anti-material roles. The AP loading also can be successfully used against infantry fighting vehicles and armored personnel carriers. The 20x110mm round fires the 130 gram (2000 grains) projectile at muzzle velocities about 850 meters per second. This results in high terminal effectiveness but also imposes a serious problem of excessive recoil forces. The 20mm Hispano round generates about 4 times more recoil when fired from 20 kg rifle, compared to .50BMG (12.7x99mm) round, fired from 10kg rifle (such as Barrett M95). To make the recoil more or less bearable by the average shooter, the Croatian designers developed a quite interesting counter-recoil system, that uses a reactive principle.

    This system consist of the large reactive tube, located above the barrel. The forward end of this tube is connected to the barrel at about its middle point. The rear part of the tube forms the reactive nozzle. When gun is fired, some hot powder gases are fed from the barrel to the reactive tube and back, forming a back-blast with reactive force that cats again the recoil forces. The large muzzle brake further helps to decrease the recoil. This reactive system, once popular in large caliber (about 80 - 100 mm and bigger) recoilless rifles, almost never had been used in such relatively small weapons. This system, while effective in counter-recoil, has some disadvantages, First, it requires some special firing techniques for shooter to avoid damage from backblast. Second, due to the same reason, it hardly can be fired in confined spaces like the small building rooms, and the RT-20 cannot be fired with structures, such as walls, in close proximity to the rear.. Third, the backblast can create additional spots for enemy, giving away the position of the rifle.

    The rest of the system is relatively simple. The rotating bolt locks the barrel by three massive lugs. RT-20 is a single-shot rifle and thus have no magazine. The shoulder rest and the pistol handle with trigger are located under the barrel, so rifle is obviously a bullpup. The RT-20 has no open sights, instead it had an telescope Kahles 6 x40 optical sight, mounted on the barrel and offset to the left.
     

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  9. Glider

    Glider Well-Known Member

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    Clever I must admit but I wouldn't fancy carrying ti very far.
     
  10. CharlesBronson

    CharlesBronson Well-Known Member

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  11. Glider

    Glider Well-Known Member

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    Rather him than me.
     
  12. tomo pauk

    tomo pauk Creator of Interesting Threads

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    It was a beast to carry :)
     
  13. CharlesBronson

    CharlesBronson Well-Known Member

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    Must do a hell of noise as well, just imagine: muzzle blast plus muzzle brake blast plus rear tube blast, deafening.

    GEPARD Hungarian heavy sniper / anti-material rifle family :

    The GEPARD high performance rifle family is Hungarian war industry's first vast, independent enterprise on rifles since the World War II. The project started in the Institute of Military Technology of the Hungarian Army in the late 1987, and the first fit for service pieces were done by 1990. The original purpose of development was to create one man-operated rifles with high caliber, high muzzle velocity and high accuracy, for special tasks.Development continues with producing more and more versions.

    GEPARD family consists of the following rifles for the time being:

    GEPARD M1(B)
    Bolt Actiont sniper rifle (caliber : 12,7 mm Russian and NATO ); see a detailed description below

    [​IMG]


    GEPARD M2(B)
    Self-loading destroyer rifle (caliber : 12,7 mm Russian and NATO );

    [​IMG]


    GEPARD M2A1(B1)
    Self-loading destroyer rifle (caliber : 12,7 mm Russian and NATO );


    GEPARD M2A2
    Personal defensive short rifle for CQC purposes (caliber : 12,7 mm Russian and NATO );


    GEPARD M3
    Heavy destroyer rifle, ATR gun (caliber : 14.5 mm Russian ); !!!


    GEPARD M4(B)
    Self loading sniper rifle (caliber : 12,7 mm Russian and NATO );

    [​IMG]


    GEPARD M5(B)
    Repeater bolt sniper rifle (caliber : 12,7 mm Russian and NATO );

    [​IMG]


    GEPARD M6
    Heavy self loading rifle with extreme high accuracy (caliber : 14.5 mm Russian ); !!!

    [​IMG]


    * Letter "B" means that the gun feeds the 12.7x99 mm NATO caliber

    Task of the sniper rifles is to shot dead living forces with one shot in great distances ( 800-1200 m ), even if those forces staying behind 8-10 mm thick steel armor ( or any other entrenchment with the same defensive value )- if their exact location is known
    I must to mention here, that the Russian 12.7mm hit through this armor with 15-20% higher rate than the same caliber NATO.Besides, their task is destroying unarmored HQs, radio/radar stations,vehicles,helicopters, rocket-ranges,and parking aircrafts from the distance of 1500-2000 m. Civilian/police usage is pure CT - counterterrorism.

    Task of the destroyer rifles is destroying entrenchments, vehicles, APCs equipped with 15 mm( with M3 it is 20 mm) within range 1500m. In urban operations they can be used to close streets with barrage fire within 800m.

    Self loader versions equipped with 5 or 10 round magazines, a bipod, and an adjustable rear brace. Russian caliber rifles can be attached to the Russian PKM machine gun tripod too. All the rifles can attached to jeeps,helicopter doors, APCs , boats witth an adapter.

    [​IMG]


    Development was based on the high powered .50 BMG and 12,7mm Soviet/Russian cartridge.Their performance is fivefold,compared to a simple 7.62 cartridge.So, the goal was a very accurate,high muzzle velocity rifle for special ops.During the planning and using,most of the problems were occured exactly because of high performance.

    The two biggest problem were : First,recoil was too big due to 12.7 mm cartridge; second, it wasn too accurate,cause of recoil.

    The big recoil was eliminated by an active-reactive,very effective muzzle break,and a softed stock with coil spring system.To achieve a good accuracy,inventors adopted the technique used at artillery arms : the barrel recoils back the same way as an artillery gun,and then a recuperator spring pulls it back into original position.
    Another big problem was the telescope,and to mount it.None of the available telescopes survived the pushing back and shaking of the 12.7mm,so a new,special telescope and holder had to be invented.They cost almost the same as the weapon itself This is the Hungarian invented 12x60 special telescope,but you can fit 6x42 or a single point optic too. Except the M1 version all of them have iron sights too_Optics can suffer 300g pressure! with illuminated crosshairs. Onto these opticts you can fit the Norwegian SIMRAD KN202F night vision, which increases the effective range at night to 800m.


    [​IMG]


    Self loaders differs from each other in barrel lenght and used materials. (M2: plate, M4: light metal, M6: alloy reinforced with carbon fibres) Besides, firing mechanism and grip of M2, M2A1, M3 versions have been rotated right 45 degrees (in comparison with barrel) and it made them 200-250 mm shorter.


    Finally let's see the details and data of M1 version

    Gepard M1 SA 1 single shot sniper rifle

    It uses 12,7 x 107 B32 or MDZ-3 Soviet cartridge,but after changing the barrel (this process can be done very fast) its able to fire .50 BMG too.The 1500mm long and 15 kg weapon can be disassembled in 30 seconds, than it'll be 1240 mm long.It is really accurate,from 100 m u can shot through its own cartridge-case (20mm),with the first shot from 600 m u can make a clear headshot ,and from 1200 m u can fight down any standing human targe. And the scatter is fewer than 25 cm only from 1300 m, which fact practically means 0.7 MOA !!! It easily hits through 25mm armor within 100 m.From 600 m it penetrates 15 mm armor and 250 mm reinforced concrete or any double brick wall
    Actually the weapon made up by barrels,which sliding into each other,during a shot the barrel and the firing mechanism moves back into the main body 100 mm.This recoil made the Gepard a very accurate rifle.
    It has only optical sight, if u want to shot farther than 600m u had better to install a laser aiming system too
    It has an own bipod,and an adjustable rear brace for better accuracy.

    Caliber : . 50 Browning or 12,7 x 107 Soviet/Russian
    Barrel lenght : 1100 mm / 43.3"
    Total lenght : 1570 mm / 61.8"
    Weight : 17.5 kg / 38.6 lbs
    Magazine : single shot
    Sights : scope,12x zoom
    Max. effective range : 2000 m / 2197 yard
    Muzzle velocity : 860 m/s
    Accuracy : 0.7 MOA


    [​IMG]


    GEPARD rifles are used by Hungarian Army and ORFK (Hungarian Police Office), Turkey and some Scandinavian country are thinking about it.Norway also bought some, and used them to make a comparison between it and Barrett. Since 1987 GEPARD rifles gained a lot acknowledgements and prizes.(for example : Gold Medal iin 1998, International Olympic of Inventors). We also sold some to Croatia during the first Yugoslavian war, and if I'm right they just stole the design and now producing it. Independent sources (American) claim it is better than the Barrett M82A1

    Gepard Hungarian rifle family
     
  14. renrich

    renrich Active Member

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    This may have been already discussed but a recent article in "American Rifleman" states that the rifles used off the fantail of the Bainbridge to kill the pirates by Navy Seals were probably two 308s suppressed and a 50 BMG to shoot through the plexiglass. The old 50 BMG soldiers on. A new sniper rifle is out. The Xtreme Machining .338 Xtreme Tactical. Claimed accuracy at 1 moa or less at ranges beyond 2300 yards. 266 grain solid copper boattail, MV of 3351 fps, 6634 ft pds ME, smallest group at 1500 yards, 5 shots, 10.8 inches.
     
  15. lesofprimus

    lesofprimus Active Member

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    God I love this thread....
     
  16. tomo pauk

    tomo pauk Creator of Interesting Threads

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    .
     
  17. tomo pauk

    tomo pauk Creator of Interesting Threads

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    Yep, mr. Bronson knows how to talk hardware :)
     
  18. CharlesBronson

    CharlesBronson Well-Known Member

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    #18 CharlesBronson, Sep 27, 2009
    Last edited: Sep 27, 2009
    Thanks.

    That is an impressive accuracy, tx for the info.


    Hmm, I wont be so sure, the sound pressure on the shooter must be high.

    aditional phots of the several types Gepard, here:

    Gepárd nehéz mesterlövész és romboló öntölt? puska | HTKA Lapcsoport – Haditechnika torzítások nélkül

    Najbolji pištolji na svijetu?? - Stranica 8 - Forum.hr
     
  19. CharlesBronson

    CharlesBronson Well-Known Member

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    KSVK-98 12,7mm Russian.


    The KSVK anti-materiel (Krupnocalibrnaya Snaysperkaya Vintova Krokov or large caliber repeater sniper rifle )was developed in the late 1990s by ZID plant, based in Kovrov, Russia. It is based on the SVN-98 12.7mm experimental rifle. Initially known as ASVK, KSVK is currently used in small numbers by varius Russian Special Operation units in Checnya as a counter-sniper rifle, capable of penetrating a brick or a thick wooden walls and disabling terrorsists hiding behind it.

    KSVK is a bullpup configured, bolt operated, magazine fed rifle. It is equipped with massive muzzle device which acts as an effective muzzle brake and a sound damper. KSVK is equipped with standard Russian side-mounted scope rail, and can be fitted with variety of day and night scopes. Open iron sights are installed for backup or emergency purposes.

    The key problem with KSVK, and with any other 12.7mm rifles in Russia is a general unavailability of the "sniper-grade" 12.7 mm ammunition. With general issue, machine gun grade 12.7 mm ammo KSVK groups are averaged at 16 cm at 300 meters, and if a sniper quality 12.7mm ammo will become available, accuracy will increase significantly.

    Caliber(s): 12.7x108 mm (.50 Russian)

    Operation: manually operated, bolt action rifle

    Barrel: 1000 mm

    Weight: 12 kg w/o scope

    Length: 1400 mm

    Feed Mechanism: 5 rounds detachable box mag.


    Sniper rifle KSVK (SVN-98 ) 12.7 mm (Russia) Small arms Arsenal
     

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  20. lesofprimus

    lesofprimus Active Member

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    I can tell u from personal experience with the Barret M82 that without hearing protection, u'll have huge problems later in life... Even standing near it when it fires makes ur ears ring....
     
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