Sons Of Liberty Gun Works GB750V2 Gas Block V2 .750" Black Heat Treated Steel, Fits AR-10, Includes Set Screws
http://www.tandktactical.com/shop/691821296101-sons-of-liberty-gun-works-gb750v2-gas-block-v2-750-black-heat-treated-steel-fits-ar-10-includes-set-screws-38601
http://www.tandktactical.com/web/image/product.template/38601/image_1920?unique=f8da0fa
Made of 4140 Heat Treated Steel. Includes Knurled Set Screws. Ready to be pinned. Designed to Sit on the Gas Journal Shoulder