Killflash add on - Trijicon Tennebrex Anti-Reflection Device for 4x32 RCO ACOG Scope

I had this on my RCO A4 (USMC identifier for an ACOG with a killFLASH for either the M4 or M16A4) while deployed to Iraq in 2007. While I was not on any dismounted patrols the product works as advertised. There is no glint from the objective lens when secured properly on your ACOG. I took my rifle with my RCO to countless ranges while doing workups for my deployment. While on these ranges there was never any glint from the lens as far as I could tell. A youtube search will give you an idea of how it does. The newest upgrade for the ACOG is the M150 for the Army. It is the same as the RCO only with flip caps added. Two things for anyone worried about the rubber band; 1. it is only a secondary means of being secured. The friction in the lens holds it in place. The rubber band acts as a lanyard. 2. It is heavy duty and withstood the heat of Iraq with no problems. Like anything else if you take care of the band you won't have any issues. I plan on buying a second one for my 6.8 ACOG.
Pros: Reduces light into lens only by 25%, Hides the glint from the lens, Perfect for concealed observation with only one Optic
Cons: It reduces total light into the objective lens, secondary method of securing is a rubberband, honeycomb effect can be slightly seen in a low room looking outside during the day, blocks iron sights when mounted on an A2 carrying handle

This review was written in the old system and had content requirements that are different than reviews written today.