Piranha STS G2, J&J Pro 1 barrel, Phsyco Ballistics X-Core Expansion Chamber, CMI Tactical Universal Cradle with gauge and on/off, and a 12 Volt Revvy.
Well it's a sight rail so it pretty much does it's job it sets you sight up so you can see over the power feed and it keeps you from getting hit in the goggles by blocking the cocking knob. It also has a cool milling job. You can also reverse it so the beaver tail doesn't stick out.
Well you really can't say anything bad about a sight rail so I'm not gonna write any thing else since there is nothing bad about the sight rail.
It's a nice little extra that will make your gun look alot cooler and keep you safe from the cocking knob. So buy it if you want a cool sight rail.