I have seen lots of dovetail/picatinny rail adapters. Anything that goes from 11mm to a picatinny/weaver rail should fit right on the receiver and then you can mount anything you want to that. Probably your best bet IMO. THe barrel would cause a shadow with a light, but should be fine with a laser. Mounting your optic on top of the receiver gives you a smooth 14" of barrel and stock to work with in terms of your scabbard/quiver/holster whatever. A traditional light set up closer to the muzzle would make a tight fit more difficult to achieve.
There isn't a lot of space for mounting on such a small firearm. You could try drilling into the forestock to mount stuff, but there won't be a lot of readily available replacement parts if you mess it up. If you are left handed, you could tap the receiver if you know what you are doing, but This wouldn't really be an option for righties as your pump hand would block the line of sight from the receiver.