Mine is the NAA Wasp in .22 magnum. I loved everything about the gun short of the delicate skeletal hammer. It's the smaller gun that I own
I picked up a Black Widow with both .22 and .22 mag cylinders. Better sights, slightly longer barrel. I took off the chunky grip and opted for a set of laminated egg shape scales. It's actually the smallest gun I will carry.
Its funny, but with the improved sights I can actually shoot the BW as well as a "full size" .22 snubnose revolver. Its been 100% reliable, and i can count on one hand how many times I have gone a day without it in my pocket.
Not the best tool for going into battle, but there have been a couple of times I was glad to remember I had it with me.