#7.68Aluminum
V SEVEN Weapon Systems Lightweight AR-15 (4 Lbs 9 Oz)
Even without the use of skeletonized or minimalistic parts this rifle weights 4 lbs 9 oz! How did V Seven Weapon Systems manage to make this AR-15 so light and still keep it normal rifle size and looking like an actual rifle? The answer is in use of materials that each individual component is made of.
