Here are some pictures of the Right Bolt Right Port Model Rimrock BRMXD. It is also available RBLP; LBLP; LBRP; RBLPRE; LBRPLE. The single port model with optional bottom bolt on recoil lug weighs 42.6 ounces. It is 1.470 inch in diameter and is 8.14 inches long. It is available in ground finish as shown or with high polish finish. AlTiN PVD coated bolt option is also available.