Spuhr: Picatinny Rail, 55mm
Great low profile rail mount for attaching small accessories like flashlights. Very durable and fits the rail system perfectly with no slop or play. This fits my bipod mount perfectly, with no extra rail length exposed. The small profile helps keep the weight down when every ounce matters.
Like all Spuhr products this rail addition is top quality and fit perfectly. Four stars, though, because the attachment point on top of the Spuhr ring is offset from the center. When I mounted a scope level on the rail, the base of the level contacted the ring mount and couldn’t be leveled properly.