The Trijicon ACOG Thumb Screw for M16/AR15 Models AC12006 is designed to provide a secure and stable attachment for your ACOG scope on M16 and AR15 rifles. Made from precision-machined, all-metal construction, this thumb screw ensures quick installation and unwavering stability. The knurled design offers a non-slip grip, making it easy to adjust and maintain your scope's position. This accessory is essential for shooters seeking reliable performance and accuracy. Trijicon ACOG Thumb Screw for M16/AR15 Models AC12006