Shoulder stock. Grips, Breech, Barrel, Sights, Trigger. Just about everything.
See the link below for the 2240 parts diagram.
Crosman still supports this air pistol. See the link below.
None that I know of, the standard 2240 has no way of mounting a laser without some sort of modification.
Feinwerkbau, IZH, Benjamin (Marauder), or Air Force (Talon-p). All of these are excellent, but costly ($300 and up) Or a Crosman 2240 (About $60)
I would not make any modifications to the model 150. Because it is too valuable in it's original format. The gun was made between 1954 and 1967.
Yes it is used for rodent control but nothing much larger. I also recommend using Hollow point .22 pellets they make a clean kill.
Several that I suggest. Benjamin EB22. It a .22 caliber single shot Pistol. Excellent quality. Crosman 2300S or 2300T. but they are expensive Crosman 2240 is more affordable Crosman 2250 with shoulder sock and scope or Walther PPK/S bb pistol. Pure fun, Feels real but not Accurate. or any of the Walther's pistols. stay away from Daisy or Marksman. I own over 70 different airguns. See the link below for airguns and read the reviews.
2240 lb = 1016.046 kg
Benjamin model EB22. Crosman model 2240. Benjamin Marauder Air or C02 Pistol. All 3 of these are .22 cal C02 air pistols, There are several others but they are spring or pneumatic not C02 systems
The GCF is 35.
The product is 2,240
There are 2000 pounds in one ton. Therefore, 2240 pounds is equal to 2240/2000 = 1.12 tons. This is talking about a US ton. A UK ton has 2,240 pounds.