THIS LISTING INCLUDES TWO CUSTOM BREECH SCREWS ONLY, YOU WILL NEED A T8 DRIVER TO INSTALL IT AND A .050" ALLEN WRENCH TO REMOVE THE FACTORY SCREW

Do not over-tighten the screw, snug it down only until the breech is firmly against the tube with no wobble. If over-tightened, the threads in the tube will strip first, the screw threads are much stronger.

The purpose of this screw upgrade is for a stronger, more stable breech mount. The Torx socket in this screw doesn't round-out easily like the factory hex-socket does and it's easier to tighten down, which is why care must be taken not to overtighten it which can damage the threads in the tube-frame. It does not fix the issue some have with the pellet hanging-up as you slide the pellet forward, no screw head or spacer-washer fixes that problem effectively, a different position for the screw to be mounted in is the only fix for that, which is what Crosman did with the Discovery, Maximus and some of the Crosman Custom Shop models by locating the screw further back under the bolt where the pellet doesn't have to pass over it. The only other way to avoid pellet hang-up is to angle the barrel downwards and drop the pellet directly into the barrel leade, or fill the hole with exoxy putty and remove the excess with a slotted screwdriver tip.

These upgrade breech screws were designed by Magnum Airpower and custom-manufactured exclusively for us, they are not available from any other source. They are made of 410 stainless-steel heat treated to meet metric class 12.9 with a specified hardness of HRc 39-43. Their approximate tensile strength is 185,000 PSI. They have a T8 Torx-socket and are a direct-fit replacement for the original inner breech screw on all the models they are listed for. They are 3/16" long which is 1/16" shorter than the factory screw, it was made shorter so it doesn't stick as far down into the tube as the original which we felt was much longer than it needed to be. Crosman uses a longer screw that was readily available from an industrial supplier to avoid the expense of having a custom-length screw manufactured, that's why their screw has a tiny .050" socket that rounds-out easily, it's what was cheap and readily available.

BREECH SCREW LOCATION: For many models like 1377, 1322 Drifter, 2240, 2250B, 2260, etc. the screw is in front of the bolt when the bolt is open, so it's easy to get to, as shown in the second photo. For Discovery, Maximus, 2300KT, 2400KT and some related models you have to remove the rear breech and rear trigger frame screws, take out the rear tube plug, then remove the bolt handle to push the bolt back far enough to access the breech screw. We suggest putting a tiny amount of medium-strength threadlocker on the bolt handle when you put it back on. They tend to come loose otherwise, you only need to put it on finger tight. The standard Crosman Steel Breech Kit, 13XX and many other models have the screw in the position shown in the photo where it's easier to reach.