Crosman Steel Breech Kit (.177 Caliber) (Fits 1377 1389 1740 1760 & PC77)
The .177 kit will fit 1377, 1740, 1760 and PC77, but not the old 1377's with the sliding breech cover. The .22 kit will fit 2240, 2250, 2260, 2289 and 1322.