crossman 2240 open sights up-grade ?

[blooregard]

Not neccessarrily !
I bought some Pro Blocks from our sponsor , JS Ramsbottom and mounted a red dot sight.
Simples, and not too expensive.
http://www.jsramsbottom.com/products...dapter-blocks-[459mtc].html

Unfortunately they do have a bad reputation for being a less than secure method of mounting optics.

Fine for the awful plastic 4x20 scope that comes with the 2250B but personally I wouldn't waste my money on them. It is better spent on the metal breach which not only provides a more secure scope rail it provides a much more secure mount for the barrel. The plastic breach can move which twists the barrel off to one side, the problocks go some way to alleviate this but they still allow an amount of movement. It might not be evident looking at the gun but the effect when the pellet is 10 metres away is far more dramatic.

[Alakar]

Fair point,
I must have been writing my post when you posted yours re the steel breech.
Obviously you are right, the more solid the mount is , the less chance of movement.
My 2240 was a cheap buy , together with a red dot . It was a tool used for close range ratting.

[blooregard]

I do actually use a couple of sets of Pro Blocks on my custom 2250 so I'm not entirely against them. Not for mounting a scope but they work well in conjunction with the GMAC multishot breach if you want to mount a couple of weaver rails on either side of the barrel, quite handy on a gun like the 2250 to have a torch, lamp or laser.