Bolt and Upper Compatibility

The Catch22 was designed around Ceiner style bolts. Because of this, .22lr bolts that aren't based on that design might not work. Here is an overview of the most common bolts / uppers.

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Is Compatible:

  • Spike’s Tactical dedicated upper receivers and conversion bolts

  • Ceiner kit conversion bolts 

  • Tactical Solutions upper receivers (slight modification to the bolt catch might be needed)
  • CMMG dedicated upper receivers and conversion bolts
  • Chiappa / ATI dedicated upper receivers
  • Taccom 22RF bolts
  • CORE15 dedicated upper receivers
  • Bushmaster C22 upper / rifle
  • Nordic Components V3 upper receivers (rounded bolt)
  • Palmetto Sate Armory (PSA) .22lr upper receivers and bolts
  • Other similar Ceiner / Atchisson style bolts


Is Not Compatible:

  • Colt conversion bolts
  • M261 conversion bolts
  • CZ V22 uppers
  • Nordic Components V1 upper receivers (square bolt)