Great upgrade on my ar-15/m-4 clone carbine - UTG Pro AR15 Carbine Length Drop-in Quad Rail

After the 30 wait for this item to arrive it went on very easily. Unlike some other reviewers all the holes lined up correctly, the top part mounted perfectly over the gas tube and both parts snapped right in. After mounting the handguard quad rail and the fore grip/light I found the remaining rail parts to be a bit rough on my hands, so I attempted to mount the plastic cover pieced to the quid rail, at first this was extremally difficult as the pieces were very rigid and I only got one on with a fight. I figured if they were plastic them maybe heat might soften them, so I placed them in a cup of very hot water for about 30 seconds, and they went on much easier. I am so far very happy with the quid rail system.