CarrierComp quietly started shipping their $60 high-quality replacement picatinny top rail for Benelli M4s this week. These will solve the problem of the factory rails being flimsy and out of spec, ruining quality optics. They also don't hang over the side of the receiver like other replacement top rails that interfere with whatever side saddle you might want to use. Needless to say, this is great news for Benelli owners. But I'd order soon. Word has it that only a handful will be shipping out before the backorders start.

http://shop.carriercomp.com/product....6&categoryId=5