Little Badger .22 Picatinny Scope Advice

[nw mb]

I received a Chiappa Little Badger .22LR 2 days ago in the mail and shot it in this morning. I like the gun a lot, especially for stowing in the pickup around the farm here. My eyes aren't what they used to be and the sights on this rifle are a bit clunky anyway. This is the first picatinny mount that I have owned. I'd like to keep the weight down on this gun so don't want a full sized scope if I can help it. The rifle only cost $150 I so don't want to spend much on the scope. Is there a small, lightweight, inexpensive, and non-illumiated scope that fits the bill? Looks like maybe a 3" - 4" eye relief?

And are all Picatinny mounts universal? The specs say it is a 'Picatinny mfour 22 pistol'. What does this mean?

Any help is greatly appreciated...don't want to just order something that might be right, or not. (I'm 6 hours from the closest city.)

Thanks!

Craig