Black PMR with custom grips, silver eyecovers, backcap, asa, pmr trigger, empire black on/off, freak barrel kit, custom shell for b2 and speedfeed, 45/45 DXS tank.
The material is stronger than the composite and isn't as big.
None really except I had to sand my hoppers feedneck to make it fit.
This feedneck is very nice it fits the styling of the gun very nicely and it also sets lower to the body. The material is also good aluminum so you really shouldn't worry about it breaking on you any time soon and the clamping device itself is alot more convinient than the regular one where you have to use a allen to loosen it now all you have to do is set it to where it holds it tight then when you undo the clamp it comes right off which saves some time. With all the colors that they offer it makes it easier to match to you styling.
I would definitely recommend purchasing this if you wanted to buy a new feedneck it looks good and is also a good at doing its job.