In the Cielo Drive (Tate) murder case, there were pieces of gun grips (wooden) noticed by a dining room chair, located on the east wall of the living room, north of a desk in the same room. This grip meant that the type of weapon used in the case could be determined.

“The revolver used was a caliber 22, Hi-standard, 'Double Nine' 'Longhorn'. The weapon has a 9 1/2-inch barrel and is 15 inches in overall length. It has a blue steel finish and a 9-shot capacity. It has walnut grips. The right grip from this weapon was broken at the scene and is in police custody. The weapon has a catalog number of 9399” said experts Dr. Nuguchi, Dr. Henry, and Dr. Herrera.

On September 1, 1969, a ten-year-old boy in Sherman Oaks discovered a .22 caliber Longhorn revolver under a bush near his home.  His parents notified the LAPD, who picked up the gun, but failed to make any connection between it and the Tate murders.