M140 complete tuning kit for Snow Wolf Kar98k sniper spring bolt action rifles.
The assembly of this kit requires no additional modifications.
It allows you to raise the power to about 460fps and significantly improve reliability.
The set consists of five basic parts.
Aluminum Piston:
Designed for stronger springs.
Unlike the original plastic, this one is made of strong and lightweight aluminum.
Provides greater durability.
The head has 6 holes through which air flows to the seal, further improving tightness.
The optimum diameter of the sealing ring ensures very good sealing and, consequently, high efficiency.
The inner diameter of the piston is identical to the original piston.
Length: 79mm, outer diameter: 19.8mm, inner diameter: 12mm.
Weight: 19g
Spring guide:
Made of precision machined stainless steel.
Fits original Snow Wolf springs and AirsofPro springs.
M140 spring:
Made of high quality spring steel, properly hardened.
Protected by chemical blackening against corrosion.
The outer diameter of the spring is approximately 11.3 mm and the length is 170 mm.
Spring guide stopper:
Made of steel, with a black finish.
Provides maximum strength and precise seating of the spring guide in the cylinder.
The original stopper is off-axis.
Piston sear:
Made of steel, with a black finish, very durable.
Weight: 950gr.
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