This .177 caliber short-nose bolt is steel with black-oxide finish. It's the version sold with the Crosman .177 Steel Breech Kit ( 1377SBPK ) and original to 2300KT, 2400KT and 1300KT .177 models. It's 8-32 thread and fits all the bolt handles we have listed.

 To convert a .22 caliber model to .177 you only need this bolt and a .177 barrel.