Easy install, easy to useIt showed that I'd receive the product, but DID NOT!!! I ordered this product from Golden and also order the 5 position Picatinny Barrel attachment. I received a Picatinny 5 position Barrel mount, but no top mount flat rail. I submitted a request to Golden and have not heard back.Edit review:The manufacturer sent me a new picatinny rail for my Mossberg 500 and it fits perfectly! Now I can put my Red Dot on and I am back in business.It's a decently priced rail for my shockwave and now I have a laser attachment. Thankyou rail people.My dad loves this rail. We kept trying to find a local store that carried these, but they were all up to $200. When we found this one, we bought it and immediately put it to good use. Would recommend.Easy to install!It was the last "mod" on my 500 wing and field and now my Slug gun is dead on at 150 yards.I put this on my 590 Shockwave. This one lined right up and bolted in place with no problems.This product is perfect, high quality, great fit and finish. All this and a fraction of the cost of others.