I have the non upgraded version, and it is still a great rifle. I am Commanding Officer of my team, and this rifle has served me well. As everyone has said, this rifle has an extremely high rate of fire. Even though it is heavy, if you are strong, this can actually be an advantage. The heavier the rifle, the more accurate it is. The reason for this is that it has a stronger center of gravity, which makes it easier to aim.
This rifle is totally worth it and is the best airsoft gun I have ever owned, and certainly the best M14 on the market. Also, this M14 and a Red Dot scope go together very nicely. Buy this rifle with this 3-point sling :http://www.airsoftgi.com/product_info.php?products_id=975, the sling helps very much.
With a Red Dot, it is easy to hit targets fast.
Durable parts, internally and externally
rate of fire
does not come with scope mount
does not come with battery
Rating: [5 of 5 Stars!]