Lets go ahead and list the pros and the cons and why I suggest this as your next AR build! Pros follow. Lightweight, it weighs on average about half what an aluminum standard lower will weigh. Remember, ounces are pounds and so on. I like having an AR that is capable of 200- 300 yard shooting that weighs 5-6lbs loaded. Its NICE! Strong, I was unable to break it with standard drop testing and even some minor use of it as a hammer with the butt stock as the handle.