Gun Pistol

Can I replace the spring in my spring loaded BB gun pistol to increase its FPS?

If it is possible where would I buy the new spring?

In most cases, you’ll find it difficult to find the right spring for the job, and the velocity differences aren’t going to be that great anyway, as most replacement springs are built to original equipment specs.

TSD M9 CO2 Gas Airsoft Gun Pistol Unboxing and review.