TRANSFER SLEEVES & GASKET for 13XX, 22XX, DISCOVERY & MAXIMUS
These sleeves and gasket fit Crosman 1377, 1322, PC77, 2289G, 1300KT, 2240, 2250, 2260, 2300T, 2300S, 2300KT, 2400KT, Discovery, Maximus and related models. Does not fit older 1377 or 1322 models that have the sliding breech cover and cocking knob.
The steel sleeve has an ID of about .145".
The red anodized aluminum sleeve is the Maximus version, it has an ID of .125".
The black anodized aluminum sleeve (no photo) is the Maximus Euro version which has the smallest inside diameter of only .062". This reduces power but extends the shot count.
The black Nitrile gasket fits all of these sleeves perfectly.