Here's further rear sights which can be created by gunsmith from Germany. It could be included to any shotgun with vented rib barrel. I have never noticed far better rear sight for vented rib barrel. Definitely not. The effectiveness is similar to that in the already attempted and true 19RCS. https://net-worth49379.ivasdesign.com/51390170/5-easy-facts-about-benelli-600-parts-described