Thursday, February 24, 2011

Tanio Koba M4 CP Blowback

This is the new Tanio Koba M4 CP Blowback Model of 2011 that has been designed and manufactured as entirely new model. Because of the extensive development and manufacturing involved, the model price is higher.

Special Barrel Design
The short type barrel design allows generous ejection of firing smoke, which is unusual for model guns of M4’s lenght.
Because of the Japanese regulation regarding model guns carbide has been inserted inside of the barrel.

Reliable Center Fire Firing Action
The ABS M16 model gun developed during the MGC-era was capable of firing the cartridges by the bolt-face moving forwards (you can find this model in our store as second hand model).
Back then this was the most suitable way to fire, but in the other hand it doesn’t make much difference with side-firing types. For this model, the “center fire” type of model gun firing action has been adopted, which makes the model firing action more reliable.

Also by cutting a part of the bolt and exposing the firing-pin, this helps to ensure safety of the model. The ejector for the real guns is “plunger type”, but for this model the ejector is attached inside of the upper receiver. This ejector’s sheet metal is connected to the upper receiver and is able to absorb the shock of the cartridge by the entire receiver.
The end-result is reliable firing action, even in full automatic.


Short Barrel & Muzzle Design
There is an A2-type muzzle flash suppressor attached in front of the front site base. Because of the short barrel the firing smoke can dissipate through muzzle unlike in longer model gun rifles.

Rear sight
The rear sight can be detached. It is fully adjustable. The charging handle can be operated as in real M4.

Rear Swivel
The rear swivel ring is located in the base of the stock and can be switched to left and right.

The stock is capable to be adjusted into 5 steps.

Trigger Guard
Knights type trigger guard is adopted which gives you enough space to trigger even with gloves on.

The mark on the right side of the receiver also indicates that this is a military law enforcement model.

Bolt & Ejection Design
The bolt facing is reproduced clearly to the locking-lag.
The firing pin is located in the internal area of the bolt. The cut parts of both sides are also slot passages for ejectors.
The sheet metal ejector is connected to inside of the upper receiver.

Magazine Design
The magazines are copies of P-MAG. Don’t run it over by a car since it is not a MAGPUL version.

Plug Fire Cartridge Design
A newly produced hexagon cartridge. If you see the head of the F-pin you will feel what it means. The loader is designed to set the inner and F-pins with one stick.

Firing Action
The Koba/M4-MG fires in a fast cycle with a very stable blowback. The gun fires 30 rounds rapidly and the bolt stops with any problems. It is a perfect model to shoot and play with.

The cartridges are aluminum made and brass colored almite finished. Compared to real brass it is light and the cartridge ejection action during blow-back is remarkably good.This cartridge contains a secret which has a hexagonal cut in the edge of the F-pin.

Therefore when the blow-back starts, the gas escapes around the hexagonal cut and more gas escapes to the muzzle compared to the round shaped cartridges, but don’t worry, the pressure of the gas will squeeze the O-ring, so gas will be sealed properly. In the top of the F-pin there is also a hole and the front head of the detonator will fit in. This part is secured so the F-pin will hit the cap in the center which prevents miss-firing.

The advantages for the new-type cartridges can be numbered more. It’s faster since it is lighter, flies further and if the cartridge falls on the ground you can hear the light metal sound.

Recoil Power
Unexpectedly, there are reports of significant recoil with this new Tanio Koba M4 model thanks to the new advanced cartridge design and well-refined firing mechanism.

Type: Cap Firing Blowback Model Gun
Overall length: 685mm~765mm
Main material: Amorphous nylon, Zinc alloy
Overall weight: 2,300g
Magazine capacity: 30 rounds

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