Small arms and Light Weapons

[Neil]

The rifles look like Excalibur.

never seen excalibur with that kind of butt...hill shape

 

[Param]

never seen excalibur with that kind of butt...hill shape

Maybe its a new kind of butt. The pedestal reads Ordnance factory Board and the name plate in front of the rifle reads 5.56 mm assault rifle.

 

[Kunal Biswas]

And what's that lying in the glass by the side ...?

Their are two Black Insas, One Amogh Carbine, One pump action shot gun..

On sides are pistols..

 

[Param]

Their are two Black Insas, One Amogh Carbine, One pump action shot gun..

On sides are pistols..

Is the Carbine the one in the front with a narrow magazine and weird butt?

 

[ALBY]

Is the Carbine the one in the front with a narrow magazine and weird butt?

Its the amogh carbine a disastrous product made by OFB and as usual army discarded it.

 

[sayareakd]

Is the Carbine the one in the front with a narrow magazine and weird butt?

yeah looks like the same with 30 round magazine the same kind which is used in AK. That butt looks weird because some part is hidden and idea is to reduce weight of carbine. look at these pics

 

[ALBY]

New Russian TsKIB ASh-12 .50 Cal (12.7x55mm) Bullpup Rifle

TsKIB SOO, a subsidiary of KBP (Instrument Design Bureau), have developed a new bullpup rifle called the ASh-12. It is chambered in a new family of 12.7x55mm cartridges they developed for the rifle
The 12.7x55mm is a thumper of a cartridge. It is similar in size, and probably power, to the .50 Beowulf. To help mitigate recoil, the ASh-12 is fitted with a large two-baffle muzzle brake. The 12.7x55mm assault rifle cartridge is based on the 12.7x55mm subsonic rifle cartridge (similar to the .500 Whisper). I do not believe an assault rifle chambered in 12.7x55mm would be able to chamber the much longer 12.7x55mm suppressed rifle cartridge. TsKIB SOO have developed a FMJ, soft-point, lead and armour piercing loads for the 12.7x55mm assault rifle cartridge.

12.7x55mm assault rifle (left), 12.7x55mm sniper (middle)

The ASh-12 Rifle with suppressor and grenade launcher (background), interesting tacti-cool revolver (foreground)
New Russian TsKIB ASh-12 .50 Cal (12.7x55mm) Bullpup Rifle | The Firearm Blog

 

[Bhadra]

Any one can make toys like DRDO but what matters is practicality of application. DRDO is all theory. OFBs are all Choury. For the Armed forces it but sorry and sorry.

 

[pmaitra]

Can anybody please provide some details about a Krinkov Brake?

I know what it does or at least claims to do. I do not know how it does that.

The question is, how?

Thanks!

 

[pmaitra]

sir jee one stupid question, what are the application of gas regulator in rifle other than for rifle grande ?

You can manipulate rate of fire or adjust it according to the atmospheric pressure of the place of operation (altitude etc.) and/or cleanliness of your rifle (especially gas tube/piston).

 

[Kunal Biswas]

Can anybody please provide some details about a Krinkov Brake?

I know what it does or at least claims to do. I do not know how it does that.

The question is, how?

Thanks!

Well by and looks of it, The gas is release forward directly cause the gun to push harder at shoulders, Making it more stable ?

Cant say much abt it, Most Muzzle braker/flasher do the opposite to lower the blow backs..

 

[W.G.Ewald]

In a Google search I found discussions about cheap versions that did not function like the "real thing", whatever that is, and references to a Section 922r in the law covering "assault rifles."

AK-47, AK-47 Parts & Accessories | AK47 Gun Accessories | GunAccessories.com

The Smith Enterprise Muzzle Brakes keep themuzzle level on rapid fire (reduces muzzle climb and felt recoil). They are made fromsolid bar stock in the USA and install easily (do not require any gunsmithing).

AK-47 Pre-BanMuzzle Brake Threaded Parkerised Our Price: $49.95

AK-47 Pre-BanKrinkov styleFlash Hider Threaded Parkerised Our Price: $49.95

Discussion here:

http://www.thehighroad.org/archive/index.php/t-399885.html

 

[sesha_maruthi27]

Krinkov-style Muzzle Brake on AK47 at night

 

[sesha_maruthi27]

Follow this link for further information.....

Ak Muzzle Brake Krinkov Brake

 

[sesha_maruthi27]

AK 74 Compensator Vs AKSU Krinkov Flash Hider - Night Shoot ...

 

[W.G.Ewald]

Follow this link for further information.....

Ak Muzzle Brake Krinkov Brake

The photo there reminded me that with the type shown at the bottom, the amount of dust and dirt (or snow) thrown up while firing from the prone position is reduced. Avoids revealing the firer's position too much.

 

[sesha_maruthi27]

A couple of links......

AK47 Krinkov Muzzle Brake - AK47 AK74 MAK 90 MAADI by Combathunting.com

Ak Muzzle Brake Krinkov Brake

Ak Muzzle Brake Krinkov Brake

Russian military pattern provides effective flash and recoil control. For 7.62mm, pre-ban, AK-47 pattern rifles with 14mm-1.0 left-hand thread barrels. AK-74 splits the flash. Open chamber with 6 gas ports keeps muzzle rise to a minimum. Krinkov has two gas ports with a flash cone to redirect muzzle flash. Slant redirects muzzle gas to almost eliminate muzzle rise. Mfg: F A Enterprises SPECS: Steel, blued finish.Threaded 14mm-1.0 LH. AK-74 - 2.8" (7.2cm) long. Krinkov - 3" (7.7cm) long. Slant - ...

 

[pmaitra]

Krinkov Brake and PDC

Can anybody please provide some details about a Krinkov Brake?

I know what it does or at least claims to do. I do not know how it does that.

The question is, how?

Thanks!

Thank you all who responded.

I did some research on the Krinkov Brake and here is what I found.

Krinkov Brake is a gas expansion chamber attached to the end of the muzzle to allow for complete combustion and expansion of the bullet propellant charge. It is most useful in short barrelled Kalashnikovs, like the AK-74U pictured below:

Thus, even if the barrel is a 16" barrel or a 8" barrel, the bullet will come out with the same muzzle velocity. This works especially well for AK-74, but in an AR-15, shortening the barrel will result in a drop in muzzle velocity because all the propellant does not get enough opportunity to burn up and hence has less pressure to push the bullet out.

A similar attempt was made by OFB-RFI with the INSAS short barrelled version. To compensate for the short barrel, they added an expansion chamber. The 5.56 cartridge used in the INSAS packs a lot of punch and AFAIK, was cited to be too powerful for a short barrelled gun. The PDC or expansion chamber was probably done to ensure the bullet does not lose its punch and at the same time to prevent too much muzzle flash.

PDC: Pre-Discharge Chamber

There has been enough speculation about the short cylinder under the barrel of the Kalantak'07, highlighted in red boxes in the two images below:

Name: It is called the PDC or Pre-Discharge Chamber.

Operation: When the bullet passes the gas-outlet on top, some of the gas goes into the gas-pipe on the top of the barrel and pushes the piston back. Now, the bullet travels further forward and part of the remaining expanding gas gets into the PDC under the barrel and expands (and cools down due to Joule-Thompson effect). As the bullet exits the barrel, there is a sudden reduction in pressure at the barrel end and the the gas inside the PDC is sucked out.

Purpose: Reduction of the temperature, and consequently, the flash of the exhaust gas following discharge of the bullet from the barrel; the flash being otherwise extremely noticeable in short barreled firearms.

Patent: Yes. Owned by OFB.

Source: My 'friend', a junior employee at RFI today asked his 'sir' and actually met one of the scientists who perfected this device.

The added bonus is that the expansion chamber prevents a lot of the propellant from burning off outside the barrel, and thus doubles up as a flash suppressor. Of course, the conical end of the Krinkov Brake also helps in that regard.

The photo there reminded me that with the type shown at the bottom, the amount of dust and dirt (or snow) thrown up while firing from the prone position is reduced. Avoids revealing the firer's position too much.

The two pieces at the bottom (in the quote above) are not exactly meant to offer expansion. The one with the oblique cutaway actually sits on the muzzle facing top-right (from the rifleman's position) and directs more of the expanding gas in the top-right position to compensates for the top-right 'jump' that typical Kalashnikovs experience. As the rifle, on firing, tends to move to the top-right position, the reaction from the top-right ejecting gas compensates for that with a bottom-left push. This increases stability. The other piece has bi-directional ejection and is probably meant to encourage gas to move in two opposing directions, thus providing no lateral movement and so that part of the backward reactive force is reduced and this is probably one reason why AK-74 has much less recoil than an AK-47.

W.r.t. the latest picture that was quoted, if the bottom-right muzzle accessory was installed in a way that one of the two cutaways were facing downwards, it would still throw up a lot of dust. The bottom-left oblique cutaway tends to face upwards in most installed AKs, but is not exactly upwards, but top-left facing. Therefore, while it definitely helps prevent the rifle throwing up dust when fired from a prone position, its main function is to increase stability.

Notice in the image below, how the oblique cutaway is not facing exactly upwards but facing top-right (from the operator's perspective) or top-left (from the camera's perspective):

 

[pmaitra]

Hex Shot

Hex Shot

Winchester Introduces Blind Side Waterfowl Ammunition

Not sure how good this round will be in real warfare, but it sure sounds like an improvement towards directing most of the pellets in the target zone:

Loaded with 100 percent HEX Shot, you get more pellets on target, a larger kill zone and more trauma inducing pellets than ever before, meaning quick kill shots.

Blind Side Product Offerings (AVAILABILITY, FALL, 2011)

Symbol	Gauge	Shell Length	Shot Wt.	Velocity	Shot Size
SBS12LBB	12	3 ½	1 5/8	1400	BB
SSBS12L2	12	3 ½	1 5/8	1400	2
SBS123BB	12	3	1 3/8	1400	BB
SBS1232	12	3	1 3/8	1400	2

For more information about Winchester's products, visit www.winchester.com.

Source: Winchester Introduces Blind Side Waterfowl Ammunition
Winchester source: http://www.winchesterblindside.com/blind side.html#/Home

 

[W.G.Ewald]

Notice in the image below, how the oblique cutaway is not facing exactly upwards but facing top-right (from the operator's perspective) or top-left (from the camera's perspective):

I notice the shooter's fingernails are too long for properly field-stripping and cleaning her weapon, her hair is too long, and her headgear is not proper issue.