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The Small Arms Thread, Part 8: 2018; ICSR to be replaced by US Army with interim 15mm Revolver Cannon.

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While on train i will try to translate tactical technical specification № 2456–43

-Total weight of Avtomat shouldn't exceed 5 kilograms including magazine,bipod and bayonet

-Lenght of Avtomat shouldn't exceed 1200-1300mm with bayonet  

-Lenght without bayonet shouldnt exceed 900-1000mm

-Avtomat must feed from detachable 30 rounds box magazine

-Avtomat should have open iron sight sighted to 1000 meters with 50 meters increments

-Groupings in semi-auto should be equal to 7.62 rifle mod 1891/30 and in automatic fire should be comparable to DP machinegun

-Rate of Fire shouldn't be more than 600 round per minute. Practical firerate when firing in 3-5 bursts no less than 80 round per minute while in semi auto no less than 35 round per minute

-Durability of system shouldn't be less than 20000 rounds

@Collimatrix

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1 hour ago, That_Baka said:

While on train i will try to translate tactical technical specification № 2456–43

-Total weight of Avtomat shouldn't exceed 5 kilograms including magazine,bipod and bayonet

-Lenght of Avtomat shouldn't exceed 1200-1300mm with bayonet  

-Lenght without bayonet shouldnt exceed 900-1000mm

-Avtomat must feed from detachable 30 rounds box magazine

-Avtomat should have open iron sight sighted to 1000 meters with 50 meters increments

-Groupings in semi-auto should be equal to 7.62 rifle mod 1891/30 while and in automatic fire should be comparable to DP machinegun

-Rate of Fire shouldn't be more than 600 round per minute. Practical firerate when firing in 3-5 bursts no less than 80 round per minute while in semi auto no less than 35 round per minute

-Durability of system shouldn't be less than 20000 rounds

Many thanks) Maybe there were more requirements?)))

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25 minutes ago, Hisname said:

Many thanks) Maybe there were more requirements?)))

Thats it .Article doesnt mentions any other requirements. But it is more guideline than strict requirement .For example on of the Degtyarev entries used pan magazine of 44 or 50 round capacity

Link:https://www.kalashnikov.ru/v-samom-nachale/

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July 30, 1943

Tactical and technical requirements number 2456 for the development of a 7.62 mm avtomat for a special cartridge.

Objective:

Develop and produce a avtomat under a special cartridge that would, at a relatively low weight, provide high firepower at short and medium ranges of infantry combat.

1. Avtomat - an individual weapon designed to defeat single and group live targets of the enemy.

2. The weapon are designed for a special cartridge, which has the following main characteristics:

a) caliber - 7.62 mm

b) the initial velocity of the bullet is 670-720 m/sec (calculated data are given for a barrel long - 500 mm)

c) bullet weight - 8 grams

d) weight cartridge - 16 grams

e) the maximum pressure is 3200 kg/cm2

3. The total weight of the weapon with bayonet, magazine, belt and accessories should not be more than 5.0 kg.

4. The length of the weapon without a bayonet should be 900-1000 mm, and with a bayonet 1200-1300 mm.

5. The supply of cartridges is provided from a detachable magazine capacity of 30 cartridges.

6. Magazines should be interchangeable. Filling the magazine with cartridges should be convenient and made without special tools.

7. Mounting the magazine on the gun should ensure a quick replacement of the magazine in any position of the shooter.

Magazine should not spontaneously drop out of the weapon, even with an accidental impact on the latch of the magazine fixation.

8. Locking the barrel bore must be rigid and must exclude the possibility of a shot when the shutter is not fully closed.

9. The trigger  mechanism must ensure the conduct of a single and automatic fire, have a reliable fuse, safety catch, trigger pull force - from 2 to 2.5 kg, not to allow double shots when firing single,

do not allow the trigger  on the fingers during automatic shooting. The design of the weapon (the trigger bow and the trigger bracket)  should provide the possibility of shooting from the weapon in thick gloves.

10. The weapon should have an open sight for shooting at distances up to 1000m. with the divisions every 50m.

11. The front sight should have a safety catch and a reliable fastening, which should provide lateral displacement of the front sight (to adjust firing accuracy).

12. A sighting device should provide stability and speed of guidance and ease of use during operation.

13. The accuracy of the firing of a single fire should not be worse than that of the Mosin-Nagant rifle. The accuracy of shooting in automatic mode should be no worse than that of Degtyarev's machine gun.

14. The rate of fire should not be higher than 600 rpm. When firing at 3-5 rounds, the rate of fire is not less than 80 rounds per minute. When firing in a single mode, the rate of fire is at least 35 rounds per minute.

15. The weapon must have lightweight bipods, which in folded form should not protrude sharply from the dimensions of the weapon and must provide shooting standing and shooting standing on their knees.

16. The bayonet should be saber-shaped. The bayonet mount must be fast, durable and comfortable. The bayonet should have a sheath for wearing on  a belt.

17. The butt must be of the usual type with a socket for the placement of accessories and spare parts.

18. The weapon should have a sock belt and ensure the convenience of shooting on the move.

19. Disassembly and assembly of weapons for cleaning should be provided without complex special devices.

20. Work mechanisms should provide 5000 shots without cleaning the weapons.

21. The weapon must fire at any declination angles and in any positions.

22. Breakage of small parts allowed up to 10,000 shots, breakdown of complex parts with 20,000 shots.

23. The number of misfires should be 0.3%when the weapon is cooled after every 150 shots.

24. Weapons should be easy to learn, manufacture, and not have alloy steels, except on some small details.

 

 

 

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Link:https://www.kalashnikov.ru/v-samom-nachale/

Lets begun proper translation .

6-AB-44-777x437.jpg

After examining German auto-carbines Mkb.42H and its modification MP-43 in USSR quickly begun work on domestic intermediate power cartridge .By the august of 1943 specialist from Artillery Committee of GAU developed tactical technical specification № 2456–43 for entire family of firearms such as self-loading carbine , handheld machinegun(LMG) and Avtomat. Initial primary requirements for supposed avtomat are as such:

-Total weight of Avtomat shouldn't exceed 5 kilograms including magazine, bipod and bayonet

-Length of Avtomat shouldn't exceed 1200-1300mm with bayonet  

-Length without bayonet shouldn’t exceed 900-1000mm

-Avtomat must feed from detachable 30 rounds box magazine

-Avtomat should have open iron sight sighted to 1000 meters with 50 meters increments

-Groupings in semi-auto should be equal to 7.62 rifle mod 1891/30 while and in automatic fire should be comparable to DP machinegun

-Rate of Fire shouldn't be more than 600 round per minute. Practical firerate when firing in 3-5 bursts no less than 80 round per minute while in semi auto no less than 35 round per minute

-Durability of system shouldn't be less than 20000 rounds

chumak_ak2_1_11s.jpg

Designer are designed weapon for cartridge that are haven’t yet appeared .Cartridge and firearm are designed concurrently which lead to considerable difficulties in the process of the design .Work on design of new cartrige begun at in jule 1943 by specialists of OKB-44 (Kuntcevo village) N.V Elizarov ,P.V Rozanov surmounting massive technical difficulties design of the cartridge finalized by end of 1943 and formally adopted in september of 1943 as "7.62 cartridge mod 1943".Using this cartirge and basing on tactical technical requirement № 2456–43 designers from various organisations set to work on new firearms .

In this trials participated :

-KB-2 and PKB OGK (Kovrov) V.V Degtyarev under leadershipof V.A Degtyarev 

-KB NIPSMVO(Shurovo vilage) A.I Sudaev V.F Kuzmishev

-KB of plant № 535 (Tula) S.A Korovin 

-KB-180 (Podolsk) S.G Simonov

-TSkB-14 (Tula) F.V Tokarev A.A Bulkin S.A Prilucsky

-KB of plant № 367 (Vyatskie Polyany known today as Molot orushie) G.S Shpagin

In the beginning of the work technical look of this weapon wasnt clear .In the beginning avtomat was seen by the GAU as universal firearm which combines advantage of LMG,SMG and rifle .This is clearly seen due to inclusion of bayonet and bipod into design.And it heavily influenced lenght of barrel which is 500mm which was calculated to provide longer range.Mkb.42 primary design solutions influenced work of certain designers and specialists from GAU .However it cannot be said that designer are strictly adhering to specification from GAU.Designs are extremely varied and diverse.Designs ranged from from enlarged SMG ( simple blowback action of Shpagin Avtomat ) to full-fledged LMGs that are incapable to serve as compact and light individual weapon such as Degtyarev KB-P-315 and KB-P-280 ,Simonov RPS-M3-44 and AS-4-P-44  and Bulkin AB-44 .Part of these Heavy Avtomats are moved to handheld Machineguns group where they are tested independently .

ppspsp2p_1.jpg

In order from left to right S.G Simonov,F.v Tokarev ,G.S Shpagin

ppspsp2p_2.jpg

In same order A.A Bulkin,V.V Degtyarev ,G.F Kubynov

Best out of all designs are emerged in NIPSMVO in AS-44 which was recommended for production of pre-production series .1000 was produced at Tula Plant №536 and in July 1945 entered service trials.Service trails revealed that As-44 satificied amjority of Army demands but its needed further refinement .Sudaev enthusiastically begun work on improving the rifle and managed to churn out couple of variats but sadly he was died from sickness in 1946.Sudaev doesnt have any helpers or students so after his death his work was left unfinished.

pppsp2p_3.jpg

Shpagin avtomat

pppsp2p_6.jpg

Kuzmishev Avtomat 

Part 2 will be continued tomorow

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Quote

Something unusual: A Korean Daewoo K2 for sale in #Aleppo, #Syria.

Only K2C rifles were shipped to Iraq, not the K2 variant, so I believe this particular rifle probably came from Lebanon.

DoKpn-kXkAA5c8R.jpg

 

Spoiler

DoKpoyMXkAA8G2y.jpg

 

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7 hours ago, Belesarius said:

 

I spoke with that guy at SHOT 2018. Totally looney tunes.

 

The ammo configuration is basically a mashup of ideas going back to the 1500s, and it has pretty much all the respective disadvantages of both caseless and conventional ammo.

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14 minutes ago, Sturgeon said:

 

I spoke with that guy at SHOT 2018. Totally looney tunes.

 

The ammo configuration is basically a mashup of ideas going back to the 1500s, and it has pretty much all the respective disadvantages of both caseless and conventional ammo.

Wasn't this the one where you have an ammo brick-looking thing you have to stuff into the poor weapon? Like, not a chunky magazine but something that literally looks like a plastic-coated brick.

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1 minute ago, Toxn said:

Wasn't this the one where you have an ammo brick-looking thing you have to stuff into the poor weapon? Like, not a chunky magazine but something that literally looks like a plastic-coated brick.

 

It feeds via things that look kind of like casette tapes.

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