Crosman 2240 Pistol - Disassembly/Reassembly and adding Mods 

I got mine long end down. It sits tighter like than when reassembling. Holds it in place.

I think you could be right, I have seen some 'stubby' barrels and they look cool too.

The power adjuster is a generic one from eBay. They all follow a similar format. Just be careful with the crosman retaining screws, they may need cutting down. It’s worth doing a dry fit first. Strip the power adjuster, install the adjuster body into the tube, screw in the top and bottom screws and components then look down the main tube to see if the screws travel into the space that the power adjusted screw would occupy. Cut down if necessary, I use a Dremel as this leaves a cleaner cut than using a hacksaw. Good luck, happy shooting

@Renegadebroadcasting Renegadebroadcasting Thanks.

The site he linked has them but they appear to be out of stock

Not that I have found, in the UK we are limited to 6ft/lb. If you go above this the air gun is classed as a section 1 firearm…. Not my rules, just politicians doing their bit to keep the public safe. Anyway, enough of my rambling about our daft UK laws. You can lower the power and extend the number of shots from the powerlet, that’s the only real advantage.

I bought some parts from www.gmaccustomparts.com and others on eBay

Brass breeches are rare these days but in my opinion they are the best for looks and weight . There are a couple of Chinese manufacturers making these now , I've bought 6 now over the last 2 years and only one came drilled improperly, the refunded my money and let me keep the poorly machined breech , I thought I might be able to drill it myself and fix the bad machining but I wasn't able to fix it , anyway , I had good experience even with the 1 bad breech . Buying off eBay from the American seller is an option but they are currently going for near 90 dollars American. Amazon also occasionally has them also from the Chinese manufacturer .