Fps up

Discussion in 'Gun Building, Modifications & Repairs' started by BigDak, Oct 21, 2021.

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  1. BigDak

    BigDak New Member

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    I just bought a Krytac Alpha CRB. It shoots about 300 fps rn and I want it to shoot about 350 but not over 400. What should I do to bring that fps up without breaking the bank?
     
  2. Guges Mk3

    Guges Mk3 Administrator Staff Member Administrator Supporting Member Lifetime Supporter

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    If it has a QD mechbox. Drop in a "Good" M100(330)/150%(340)/SP90(330) spring.
     

  3. BigDak

    BigDak New Member

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    Whats a QD mechbox. Im sorta new to airsoft and the techy terms
     
  4. Guges Mk3

    Guges Mk3 Administrator Staff Member Administrator Supporting Member Lifetime Supporter

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    Quick Detach - Where the spring guide comes off the back mechbox without doing a major tear down to allow you to change the spring (after you set the piston forward by firing in SA mode).

    The Alpha (discontinued) CRB does have this feature...

    https://krytac.com/product/alpha-crb/

    Scroll down onto the mechbox section to see this feature.
     
  5. BigDak

    BigDak New Member

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  6. BigDak

    BigDak New Member

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    A larger spring shouldn't burn out my motor should it? I dont wanna break something
     
  7. Guges Mk3

    Guges Mk3 Administrator Staff Member Administrator Supporting Member Lifetime Supporter

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    Directly a spring does not burn out a motor. Plus the increase is minimal, going from a 300FPS spring to a 350FPS spring.

    High voltage batteries and a really heavy spring affect motor life more drastically, but it doesn't technically "burn it out" in a short period of time and use.
     
  8. BigDak

    BigDak New Member

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    So what kind of spring do you suggest? M100? M120?
     
  9. Guges Mk3

    Guges Mk3 Administrator Staff Member Administrator Supporting Member Lifetime Supporter

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