Kit consists of one Sniper Tools ACI and one A-0004 ACI QD Interface (with screws). The ACI is held in place against the A-0004 by a springloaded tab, allowing the ACI to be attached or removed without tools.

About Sniper Tools Angle Cosine Indicator

The Sniper Tools Angle Cosine Indicator (ACI,) is a simple tool for snipers/hunters in mountainous terrain for determining the angle to the target so that adjustments can be made to achieve the correct Point-of-Impact.

The “Mil Spec” ACI is a vault solid, water proof precision instrument (as per US Military Specs;) quiet, and made from aircraft grade aluminum, which is anodized in a flat black color. The cosine numbers are laser engraved onto the body in 5-degree increments. The lens is shatter proof, shock proof, and resistant to chemicals such as acetone and cleaning solvents.

Completely mechanical, there are no batteries or electronics to fail.