When looking at parts for M700s I found this thread very useful: http://www.airsoftforum.com/board/Ultimate-Parts-Guide-ge-t194133.html scroll down for an English translation.
The spring shown in that picture hits the button on the magazine harder than the stock one giving a higher velocity. This is better for HPA at higher pressures because the button on the magazine is harder to press down. The part on the top right also goes on the bolt but is for durability since other parts wear on the stock pot metal piece. The last four pieces go in the magazine and reduce the entire mechanism by a part which is said to increase consistency. Each magazine only requires one knock arm and one plunger, so as pictured you get enough for two magazines.
Two of the pieces of rubber will only fit in the Tanaka style hop up. The other is the piece of rubber on the bottom of the bolt that connects with the magazine. It is better quality rubber and helps with consistency.
The third thing you have listed is what pushes the piece where the gas comes out from the magazine against the bolt. The G&G spring is stronger than the stock one so it lets less gas leak out and improves consistency.
Hope that helps!
The spring shown in that picture hits the button on the magazine harder than the stock one giving a higher velocity. This is better for HPA at higher pressures because the button on the magazine is harder to press down. The part on the top right also goes on the bolt but is for durability since other parts wear on the stock pot metal piece. The last four pieces go in the magazine and reduce the entire mechanism by a part which is said to increase consistency. Each magazine only requires one knock arm and one plunger, so as pictured you get enough for two magazines.
Two of the pieces of rubber will only fit in the Tanaka style hop up. The other is the piece of rubber on the bottom of the bolt that connects with the magazine. It is better quality rubber and helps with consistency.
The third thing you have listed is what pushes the piece where the gas comes out from the magazine against the bolt. The G&G spring is stronger than the stock one so it lets less gas leak out and improves consistency.
Hope that helps!
