Ruger Mini 14/30 Accu Strut 4" Socom Stainless Steel 1 Clamp Reduces group size 50-75% for most older rifles with straight profile barrel and up to 33% for newer, tapered barrels Limits hot-barrel "stringing Installs in minutes...100% bolt-on performance...no tuning or adjustment necessary (point-of-impact maychange) Weight: 5.6 oz. Length 4"