I love the Magpul gear. I had read some people do not like the weight, i don't have an issue with it (yet?)
I have not shot it yet, but the overall fit on the gun and ergonomics...i could not ask for better.
I never paid attention to the MOE forearm until i bought it, it is a little "different" that the std 870 one and i am not sure what other than shape. It should only take a few rounds to acclimate to, but i like the options it now provides. It WILL clear a 6 round side saddle which was a concern of mine (have not switched over to my 6 shot yet)
All in all, i find this like most of the Magpul gear i have bought, like it better than i thought i would. So far the only thing i have ditched is the AFG. It was "okay" on my carbine quad rail, but when i switched to a free float tube i didn't like it at all. Switched to the MAG
http://store.magpul....oduct/MAG412/39 and am still playing with location but like it as a handstop.