He set the gun down and picked up a pair of silver shears, giving them a causal toss, using them to cut the back of the pant leg free, to see the wounds. If they were like wounds on a person, or showed signs of an allergic-type reaction, using the tip of the blades to knock the fabric open after he had finished cutting. Magneto didn't take any effort to agitate the nails, but he didn't take any special care to avoid them either.