The 90's were chock full of classic action movies and Eraser is sort of one of those. Big name action star, female co-star, multiple action scenes, minimal plot, cheesy one-liners, it's all here. Another thing that Eraser stays true to is the undoubtedly broken movie physics. The scene I am analyzing happens at the movie's climax, the bad guys have just brought down the warehouse that Arnold was hiding out in, thanks to his quick thinking he tosses his gun to a nearby enemy. The fool picks it up and is then targeted by his own teammate who mistakes him for Arnold. The bad guy fires at his comrade as he screams "NOOOOO", he is then struck by the aluminum round and sent flying to the far wall of the remaining warehouse. Right away you can tell there is seriously something fishy about the physics in this scene, an EM gun firing aluminum rounds at nearly light-speed having virtually no recoil? As said in an earlier scene, the gun fires rounds at nearly light-speed so let's just assume it is at light-speed. The aluminum rounds seemed to the size of a 50. caliber round, take into account its less massive element I estimated that the rounds would weigh as much as two empty cans or 0.026 kg. As for the shooter and victim I used the average mass of a North American male so about 80.7 kg. The gun itself looked like a sniper rifle so I took the average mass of a military sniper rifle so about 12.9 kg. Add the mass of the gun to the mass of the shooter and you get the shooter's final mass at 93.6 kg. Finally the velocity at which the round would be going 299,792 km/s or the speed of light. Taking all this into account I have written out and solved the following momentum equations accounting for the shooter and the victim to see if momentum was, in fact, conserved.