Extra added rounds - FCW Remington 870/1100/11-87/Versamax and V3 Magazine Extension

This is a very high quality and well crafted extension tube. After hand filing the dimples, I tested the Versamax V3 cutting the supplied spring down 1 inch at a time until no more crunching sound and 9nth shell never made it in but only half way. No issues cycling rounds. I added a sling clamp to assist the new extension with a small amount of blue loctite to help secure. 9 shots are better than 6 . This Kevlar poly carbonate type material is very light weight and strong.