US Tactical Systems M14 &Prime;Brookfield&Prime; Type WEAVER Scope Rail Integrated Sight Channel Constructed from a solid billet of 4140 steel Two-point lock-up, and three point contact with the crown of the reciever for ultimate stability The popular &ldquo;Brookfield&rdquo; Type M14 and M1A Weaver Rail Mount Rock Solid- Built To Last - Includes Our Limited Lifetime Warranty