Can boost the initial speed on Tokyo Marui's MWS,CQBR、MTR16、type 89 GBB.

This product is to exchange the spring inside.

Inside the Tokyo Marui GBB loading nozzle, there is a part called a piston valve. This product is to exchange the spring inside. To boost the initial speed, we simply increase the gas that is released by delaying the timing of when the valve closes.
The inner barrel used for Marui's gas blowback rifle has a short specification of 250mm which will not cause the problem of low initial speed.

* Adjust the initial speed by yourself so that it does not exceed the specified value.

Components

・ Valve spring short
・ Valve spring length
・ Spring aluminum guide

※The spring is stainless steel.

Caution

You can improve the initial speed by using any of the included parts. Try the best combination for your gun . The initial speed will be affected if the bolt carrier is heavy, aluminum and light, chamber packing is combined with other company products and the following below.

・ Replacing only existing springs
・ Incorporate a single ring
・ Both ring and spring (two patterns, short and long)

Upon Assembling

The spring is for exchanging the original spring.
The ring is used by fitting the convex side to the spring, but we recommend incorporating by lightly bonding with an instant adhesive.
Install in the order piston valve ring, piston valve spring then the piston valve.



In our test, we used a CQBR GBB. When using a ring alone, the initial speed is increased by 7-8%.
By using the ring together, you can see an improvement in the “actual value” of 14% to 19%.