Scalarworks benelli m4 t2 mount is decent - Scalarworks SYNC Aimpoint Micro T-2 Standalione Mount f/Benelli Shotgun

All in all, high quality product for the Benelli M4 T2 mount. Came with 3 sets of screws and T-10 Torx bit. Co-Witness right on the money in the lower 1/3rd, right where you want it. My only issue is the "shoulder screws", that are mounted to the central section of the Benelli M4 receiver. These are designed so that you "slide" the mount onto the shoulder screws and then fully secure the mount with the two end screws that are accessible from the top. Initially, I fully seated (and torqued to 7-10 NM) the shoulder screws and was not able to "slide" the mount onto the receiver. I had to back the shoulder screws out a 1/4 turn from tight (or so...trial and error) to slide the mount on (and the online instructions annotated this as a "pro-tip"). This concerns me, as I can see these screws coming loose after repeated hammering from the destructive recoil of the 12GA round. They are not accessible once the mount is on and the only way to check them is to remove the whole mount. This is my only knock on the design, or the intended purpose of the shoulder screws. If they do come loose, you will not know it and they will potentially damage the factory threads of the Benelli M4 receiver. Time and inspection will tell.