MIG HYDRA: MIG hydra , a similar weapon to the MCIWS with interchangeable barrels which helps to shoot the target with different ranges. The AR-15 is the most popular firearm design in the United States. The reason behind that fact is the gun’s ability to easily and quickly transform to meet the end user’s requirements. Everything from heavy-barreled long range precision to tiny stubby 9″ lightweight designs are possible, and swapping from one to the next can be accomplished using everyday tools and a little elbow grease. MGI recognized this fact and decided to take it one step further — why need tools at all? Then came the Hydra... here user can change barrels, calibers and even magazines easily. The barrel can be removed by unlocking the barrel lock which is provided just below the front hold of the rifile. With the Hydra, the barrel nut has been replaced by two lever-operated bars. Turn the levers outward and the bars rotate, revealing a cut that