For gunsmiths or firearm owners working on their AK firearms, the Otis AK Soft Jaws are an essential item to protect your AK while keeping it secure in a vise. Works with light duty vises up to large, heavy duty vises (minimum vise jaw measurement is 4”L x 0.5”H). Composed of a non-slip rubber material, these soft jaws have the perfect balance of hardness to keep even the smallest parts clamped and flexibility to mold to the various shapes of a firearm. Softer than gun parts, these soft jaws will not mar or scratch gun metals. The rubber is oil, solvent and alcohol resistant and easily wipes clean. They also feature a top lip which not only help protect the firearm but in conjunction with embedded magnets, also hold the Soft Jaws to the jaws of the vise. Designed by a group of professional gunsmiths, the AK soft jaws are designed specifically for AK firearm platforms and feature detailed contouring and rivet holes to perfectly fit and securely hold rifles of the AKM pattern, the most commonly found AK style. This Soft Jaw will not fit RPK pattern AK rifles.