diff --git a/OGP1718-Worms/src/worms/model/Rifle.java b/OGP1718-Worms/src/worms/model/Rifle.java
index c20cdef..ebde28d 100644
--- a/OGP1718-Worms/src/worms/model/Rifle.java
+++ b/OGP1718-Worms/src/worms/model/Rifle.java
@@ -9,25 +9,52 @@ import static java.lang.Math.sin;
 
 public class Rifle extends Projectile {
 
+    /**
+     * @param worm
+     *
+     * @post ...
+     *       |worm == worm
+     * @post ...
+     *       |new.getMass() == 10
+     * @post ...
+     *       |new.getForce() == 1.5
+     */
     public Rifle(Worm worm) {
         super(worm, 10, 1.5);
     }
 
+    /**
+     * @return  ...
+     *          |result == ThreadLocalRandom.current().nextInt(1,6) * 2
+     */
     @Override
     protected int getRandomHitPoints() {
         return ThreadLocalRandom.current().nextInt(1,6) * 2;
     }
 
+    /**
+     * @return  ...
+     *          |result == this.hitPoints
+     */
     @Override
     protected int getImpactHitPoints() {
         return this.hitPoints;
     }
 
+    /**
+     * @param value
+     *
+     * @post ...
+     *       |if (value > 10)
+     *       |  value = 10
+     *       |else if (value % 2 != 0)
+     *       |  value--
+     *       |super.hitPoints = value
+     */
     @Override
     protected void setHitPoints(int value) {
         if (value > 10) value = 10;
         else if (value % 2 != 0) value--;
         super.hitPoints = value;
     }
-
 }