Simplistic design. - Strike Industries AR Optimus Weight Recoil Buffer

Strike Industries makes a lot of great products but it seems like they always fall just one step short of perfection in design. This buffer is very easy to use for its intended purpose and utilizes 4 buffer weights (tungsten, steel, aluminum, polymer) rather than your typical 3 weights. Only instructions it came with show standard H1, H2 and H3 configuration but if you go to website you realize there are at least a dozen different configurations as you would expect with the ability to use 4 weights with 4 different materials. The polymer end of buffer seems thinner than many others out there and the top is just screwed on with a rubber o-ring so I’m curious how well it will hold up in my AR10. Price is pretty steep at $65 as well.