Sighting In Your Scope Tips:The Trijicon ACOG Scope on the AR-15 /M4 Carbine

Published on July 23, 2010
Duration: 13:08

This guide details the process of zeroing a Trijicon ACOG scope on an AR-15/M4 Carbine, emphasizing efficiency and accuracy. It covers essential range preparation, the use of a laser bore sighter for initial alignment, and the strategy of sighting in at 25 yards for a 200-yard zero. The guide also explains ACOG reticle features and turret adjustments, drawing on the expertise of firearms reviewer sootch00.

Quick Summary

Zeroing a Trijicon ACOG scope on an AR-15 involves initial sighting at 25 yards using a laser bore sighter for efficiency. Adjustments are made in 1/4 MOA increments. Shooting consistent groups at 100 yards confirms the zero, with a 25-yard zero typically resulting in impacts roughly 2 inches high at 100 yards and on target at 200 yards.

Chapters

  1. 00:00Firearm Safety Rules
  2. 01:20Sighting in the Trijicon ACOG
  3. 02:16Essential Range Gear
  4. 03:52Ammunition Recommendation
  5. 04:48Bore Sighting and Zeroing Strategy
  6. 06:04Using a Laser Bore Sighter
  7. 07:59ACOG Reticle Features
  8. 08:50Adjusting Elevation and Windage
  9. 11:36Shooting Groups for Consistency

Frequently Asked Questions

What is the recommended initial sighting distance for zeroing a Trijicon ACOG scope on an AR-15?

It is recommended to initially sight in your Trijicon ACOG scope at 25 yards. This distance allows for efficient bore sighting and initial adjustments, setting you up for a 200-yard zero with impacts approximately 2 inches high at 100 yards.

How do you adjust the Trijicon ACOG scope's turrets for windage and elevation?

The Trijicon ACOG features 1/4 MOA adjustment increments. This means each click of the turret moves the point of impact by approximately 1/4 inch at 100 yards. Adjustments are made by turning the respective turret in the desired direction (e.g., 'Up' for elevation).

What essential gear is needed for a successful range day when zeroing a scope?

Essential gear includes a tool bag with screwdrivers, eye and ear protection, sandbags for a stable rest, a laser bore sighter, targets, markers, binoculars (minimum 8x), and potentially 20-round magazines for better bench stability.

What are the benefits of using a laser bore sighter when zeroing a rifle scope?

A laser bore sighter significantly saves time and ammunition by providing an initial alignment of the scope's reticle with the firearm's bore. This ensures your first live rounds will be on target, facilitating a quicker and more efficient zeroing process.

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