E-Blanks has you covered:

So you swap out 5 parts – 1) The magazine 2) Laser recoil module 3) Charging handle 4) Muzzle flasher and you’re good to go.

Looks alright *shrug*.  I don’t know how good the “recoil” is simulated, but they claim it’s excellent.

The one downside to this is it appears to be TOO safe, so you might get made fun of by tru operational badasses who refuse to operate in safe spaces haha.

Thoughts?