Crosman 12" .22 Caliber Rifled Barrel - Fits 2240 2250 2289 1377 1322 - Airgun Use Only This is a 12" .22 rifled barrel that will fit the Crosman 2240 2250 1322 1377 2289, etc. It has an OD of 7/16". For caliber conversion projects you will also need the .22 bolt and .22 bolt o-ring, of which I have available. For installation on a 13xx, you will need to either a) drill out your barrel band to accommodate the longer barrel or b) purchase the specific 2289 barrel band. The barrel can be polished to a high nickel-like shine for an additional $5 fee.