Hi,

this has come up a few times, this is how I did it:

https://www.airgunbbs.com/showthread...mp-no19-sights

In the end there was something about it I didn't get on with (maybe it interfered with hand position?) I eventually fitted a no.22 which is quite good: https://www.instagram.com/p/B7v3vnwhdmb/

I'm sure someone mentioned the mounting plate is for a bullet rifle and the alignment of the holes meant the screws would hit the stock bolt on an LP/Standard air rifle.

There are some good pics of the factory cut out somewhere out there.

Cheers,
Matt