Put this on my Benelli M1 with an adaptor and it works well. Weight does not inhibit the inertia operating system of the M1 (with standard 2 3/4" 00 buck loads) and weight was my main concern in a light purchase for this particular weapon. The plastic construction may get beat up around the bezel with extended use though. 
Pros: Weight
Cons: Plastic construction
                    
This review was written in the old system and had content requirements that are different than reviews written today.