This is my concept gun of Portal Rick of the dimension P-137, is the only Portal gun able to time travel by using 4 time crystal to boost the energy of the portal fluid. This gun is ment to be used as a last resource because you can mess up timespace continuum. And is not a good thing. Portal Rick uses it only to travel in the distant future to minimize the damage it could cause with the butterfly effect.
(Rick and Morty) P-137 Time travel portal gun