Yes, the 9mm version of the LaserLyte Laser Trainer Pistol Cartridge will work in a Ruger PCC.
The LaserLyte Laser Trainer Pistol Cartridge will stay illuminated for 1/10 of a second.
Operating the slide will not eject the LaserLyte Laser Trainer Pistol Cartridge. Once you are finished with it you will have to manual extract the LaserLyte Laser Trainer Pistol Cartridge by using something like a cleaning rod.
Yes, the LaserLyte Laser Trainer will work for the Rock River 40 Caliber Carbine.
Yes, this will be compatible.
Yes it can be left in the chamber for a short time but I would not leave it in for too long.
You would have to rack the slide for every shot to reset the trigger so that the striker impacts the back of the laser to activate it when the trigger is pulled.
Item Dimensions LxWxH 5 x 5 x 1 inches
Yes because your P238 is chambered in .308
No, it will not and should not be used as they are very different calibers and very different sizes.