I have three that fit the OP, and in the order I like to use them:
1) keltec PMR-30 in OD.
2) Buckmark NRA special with red-dot & Tactical Solutions light wt barrel.
3) JC Higgins 22lr 6" revolver, 9 shot, aluminum frame.
The PMR-30 is a gem, great trigger for a kel-tec product, and accurate as is.
My range buddies & I love it, it has been very relaiable, but must pick the right ammo.
Also need to load the mags perfectly.
Carried it on my buddies trap line, did the job on a coon.
This is my 2nd Buckmark, love it, son got my 1st one.
Maybe lose the red-dot for holster carry.
I would carry any of these on a trap line.