Terrible product - Sure Cycle Benelli Shotgun Magazine Extension Tubes

I will keep this shirt and sweet. Do not buy this product. After installing it, a few things happens. First, the tubes became completely scorched and damaged from the shotgun blast, as if the material used to make the tube couldn’t hold up against the heat whereas other tubes from others hold up fine. Second, the brace that holds the barrel and tube extension together kept slipping forward even when I tightened the nut completely and scratched the brand new barrel on my shotgun. I highly suggest either a much shorter tube or a different brand all together.