Just googled the image and said that it was from the movie Wolf Warrior. I wonder if they have any help from the PLA. The rail system looks good
Depending on what do you mean by "help". PLA regularly helps out in Chinese movies and TV programmes by providing equipment (tanks, trucks etc) and manpower. All the soldiers in battle scenes in the classical Chinese war movies like Hero or Three Kingdoms are actual soldiers from the PLA, for example.
But in terms of the details of equipments such as the rifle, the actual tactics, doctrine and training shown etc, I would say PLA has very little if no input what-so-ever, and it is all down to the imagination of the movie producers and directors.
A type 95 rifle in similar configuration (w.r.t the rail system) etc has appeared about a year ago, but was later dismissed as a fake made from a dummy training weapon. Certainly there currently is no credible information on the addition of a rail system like such as an upgrade to 95 family used by Chinese security forces.