STEEL BREECHES, BOLTS, HANDLES & PLUGS ***SELECT PART FOR PRICE***
These are all interchangeable and fit the Crosman barrels we have listed. The bolt and barrel calibers must match. The internal breech mounting-screw location must be compatible with your gun.
In the main photo, the top breech is the Discovery and Maximus version. It fits 1740, 2240, 2250, 1760, 2260, all 2300 models and 2400KT. It has a full scope rail which makes it the best fit for scope rings and Williams sights. It requires a notched hammer to allow clearance for the internal mounting-screw location. That screw is under the bolt where it doesn't interfere with the pellet sliding forward. To access the screw hole, install with the end-cap removed from the tube and the bolt handle off so the bolt can be pushed back far enough.
The middle breech is the same long breech available with Crosman Custom Shop 2300KT and 2400KT models. It fits the same models as the Discovery and Maximus breech but has a notch for mounting the Crosman LPA MIM sight. It requires a notched hammer to allow clearance for the internal breech screw. That screw is under the bolt where it doesn't interfere with the pellet sliding forward. To access the screw, install with the end-cap removed from the tube and the bolt handle off so the bolt can be pushed back far enough.
The bottom breech is the standard version issued with the Crosman Steel Breech Kits 1377SBPK & 2240SBPK. It fits standard Crosman 13XX & 22XX models but will not fit Discovery or Maximus models due to the inner breech-screw position. It works with standard and notched hammers and is the easiest to install. It has a notch for mounting the Crosman LPA rear sight. This is the only breech listed that fits pump models 1377C, P1377, PC77, 1322C, P1322, 2289G Backpacker and 1300KT. If you use our custom Magnum hammer for 13XX the Discovery / Maximus and Crosman Custom Shop breeches will fit.
All three breeches require a 3/4" long rear breech screw. The 13/16" screws that are standard on plastic breech models are too long for a steel breech. Too long of a screw can damage the hammer spring or prevent it from working correctly. It will also hit the threads on the adjustment knob of our custom Magnum Adjusters. For 13XX models our Magnum Adjusters include screws for the breech and trigger frame that fit correctly.
The standard rear sight original to plastic breech models does not fit any of the steel breeches.
The steel plug is standard for all three breeches, it's not included so you must select it separately.
Both bolt calibers have long-nose and short-nose versions. The bolts are steel with black-oxide finish, those are the only factory bolts we currently stock. The handles are heat-treated steel with black oxide finish. The long-nose bolts push the pellet further past the barrel port which creates a better seal between the pellet and barrel. This produces more consistent velocity and tighter shot groups. The short bolts tend to work better with extra-long pellets allowing more room to load them. The long handle fits better with wide scope rings and Williams sights. The short handles are more compact and tend to fit better in a gun case.
A small amount of medium-strength threadlocker is recommended for installing the bolt handles. That prevents them from coming loose during use but still be removable with a wrench if needed. Tighten the handle finger tight only, the threads can be damaged if over-tightened.