Trijicon Tenebraex killFLASH ARD for 5.5x50 ACOG AC11013 is the most suitable anti-reflection device for your Trijicon ACOG 5.5x50 riflescope. The one of its kind device has anti-glint capabilities that helps protect the optics glass from factors like sand, dirt and grime. In addition to that, it protects the lens from scratches and damage, and offers an inexpensive, retrofittable, field-practical way of reducing objective lens glare and reflection. The ARD is rendered complete with a unique geometry along with a cutting-edge honeycomb material to hide reflections from optical surfaces. The installation of the Tenebraex AC11013 anti-reflection device adds to the life of the Trijicon rifle scope it is paired with. Trijicon Tenebraex killFLASH ARD for 5.5x50 ACOG AC11013