Collimator Grid Reticles

The SAC utilizes an alpha-numeric grid that is fixed in a very precise, consistent position relative to the bore of the weapon. The grid pattern itself varies based on the type and magnification of sights used. While the grid can be easily customized to meet the requirements of a specific end-user, we have created three standardized grid patterns that work with most weapons used by US military and law enforcement organizations.

Assault Rifle/ SMG Grid

For assault rifles, sub-machine guns, and some light machine guns (i.e. M4/, M16, MP-5, M27), the SAC grid is graduated in large, bold squares and smaller, finer squares. The large squares, which are designed to be easily visible when using iron sights or optics with no magnification, are 4 mils (equal to approximately 14.4 inches at 100 yards). The small squares are for use with low power magnified sights (i.e. 3-4X magnification). They are 2 mils (approximately 7.2 inches at 100 yards). There is a cut-out portion on the large squares that creates a 'notch' for the front sight post when using iron sights.

Sniper Weapon Grid

The grid for sniper weapons with magnified optics (10X magnification or greater) is significantly finer than the one used on assault weapons. Each square on the sniper grid is 0.2 mils (approximately 0.7 inches at 100 yards). The smaller squares allow for much more precise readings - less than 1/2 minute of angle (MOA). This type of precision is required for sniper weapons, where the accuracy standard for each piece of the system and for the system as a whole is 'better than 1 MOA'.

Unlike the assault weapon grid, the sniper grid is not a square. In order to allow shooters to record zero at extremely long engagement distances, the bottom of the grid is extended by 16 mils.

Hybrid Grid

Some weapons, such as the SCAR Heavy, can be used with a broad range of sights depending on mission requirements. For those weapons, we developed a hybrid grid that allows for use with both unmagnified optics and sniper sights. The hybrid reticle has the standard assault weapon reticle with a fine reticle overlaid in the central portion of the grid. The small, fine grid is designed to only be visible when viewed through magnified optics.

Custom Grid

None of these reticles work for you? While we try to standardize grid patterns as much as possible to improve inter-operability and ease-of-use, we have a large number of other grid/ reticle patterns that have been developed for customers throughout the world. And, if one of those doesn't work, custom grids can be designed and developed to fit a wide range of weapons and applications. 

Purchasing Information

Agency/ Contract Purchase

For quotes or other information related to agency direct purchases of collimators, please contact us.

Retail Purchase

Collimators can be purchased directly on our retail website. Note that you will be redirected to

Knowledge Base

For general information on the collimator, why it's important, and how to use it, check out our Collimator Knowledge Base.

Video (Coming Soon!)

We're putting the finishing touches on a video that shows how the collimator works (and confirms that it really does work, in case you're skeptical).


Use the link below to download a printable brochure with collimator information and specifications. Share it with your purchasing folks!


Telluric Group, LLC
136 Venture Drive
Brunswick, GA 31525 USA


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