The KIDD Cocking Assembly is offered in SILVER. The KIDD Precision Ground Guide Rod is made from hardened tool steel and held to 2/10,000" tolerance throughout its entire length. The rod is nitride treated which gives its surface a 70C rockwell (harder than a file) surface hardness. Guaranteed the smoothest and slickest guide rod in the industry. The three springs come in varying tensions for standard, subsonic ammo, or 17HM2 ammo. Our cocking assembly will drop into any brand of 10/22 bolt.