Your's is not right. It's NOT SENSITIVE to different .22 ammo.......It's BROKE.......All my .22's go bang with ANY .22 I stuff in them. Although some are more accurate than others.

Being "sensitive" and having to use only one brand of ammo is like saying you can only run EXXON gas in your car instead of others such as Shell or Mobil........Send it back for repair.

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S&W Accumulator