Hammer Spring adjustments on Barra 250Z?


  • Hello,

    I have removed the buffer tube and trying to make adjustments to the hammer spring,it doesn't seem to effect the fps? I just increased the reg pressure to approx 2350 PSI and even when I loosen the hammer spring tension or raise it all the way, I am still shooting around 958 fps.

    I am shooting 23 gr Javelin slugs. My main question is; do I need to remove the stock to get the full capability of adjusting the hammer spring? TIA.



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