AR-15 Optics
Red Dot Mount Height Chart: Absolute, Lower 1/3, 1.93 & 2.26
A red dot mount height chart — absolute co-witness, lower 1/3, 1.93in and 2.26in optical heights explained, with what...
Field Notes
News
Buying guides, comparisons and how-tos from the Xtreme Tactical team.
AR-15 Optics
Red Dot Co-Witness Heights Explained: Absolute, 1/3 & 1.93
Absolute, lower-1/3 or 1.93in? Red dot mount co-witness heights explained — what each means, how it affects your AR-1...
Guide
How to Mount & Zero a Red Dot Sight: Step-by-Step Guide
A step-by-step guide to mounting and zeroing a red dot sight on a rifle or pistol — mounts, torque, thread locker, bo...