I've been considering one b/c of cheap ammo - plus adding accessories to it would be fun for me. Can I ask where you picked it up? I haven't seen one in a store.
I have one and it's a great little plinker. Not bad on accuracy with a Aimpoint clone on it. It can also share my BDM mags with my CMMG conversion bolt for my ARs.
I have both the PLR-16 and PLR-22. Love both, fun to shoot and accurate. Not sure what you want to add. I picked up my stuff at Ranger Supply Inc on West Jefferson Blvd in Fort Wayne, good prices too. Added to both:
foregrip, sling, muzzle break, mags and charging handle deflector on the PLR-16. They do take a little breaking in and like all 22 pistols are a little picky on ammo choices.
Clean, clean and then really clean before you shoot. Not sure what they dip the sucker in at the factory but I call it "Gun Jam".