Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Junk

The hole for the recoil spring is about the size of the recoil spring so the spring pushes right through the buffer. It needs a metal washer with a slot in it between the the spring and the buffer. Since I know how to make the needed washer I will alter it accordingly and it should be a good item, If you can't make the modification then I would strongly suggest passing on buying it.