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For opening up the barrels inlet air port  ( at the transfer port ).


You choice of either a .161 drill bit for .22 caliber barrels, or a .187 drill bit for .25 caliber barrels.


Great for regulated applications or for unregulated applications where more power is needed.


* After placing your order, email Tim at:  to let me know if you prefer a .161 or a  .187  drill bit.


Includes:  1- drill bit, paypal fees, and free fast shipping, within the USA.



Price: $7.98