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This video compares the optical and mechanical performance of the Chinese Imitation ACOG to the real Trijicon TA31 ACOG. This video does not address the cosmetic differences discussed in many other videos but looks at the actual performance parameters. It's a long video so if you want to skip around topics, here are the time indexes:
Background 2:27
Similarities 3:37
Focus Error 5:36 (Important)
Field of View 10:43
Image Brightness 13:16
Geometric Distortion 15:23
Chromatic Aberration 16:31
Reticle & Bullet Drop Compensation 17:40 (Important)
Holding Zero 24:53 (Important)
Water Resistance 30:17 (Important)
Summary & Conclusions 38:31
Recommendations 41:27
Before you buy one of the imitations, I highly recommend that you watch those topics that I identify as "Important" above. The focus error and water resistance results are particularly interesting to me.
This video does refer to the video "Correcting the Focus on Chinese Imitation ACOG Scopes". That video is here:
• Correcting the Focus o...
Except as noted in the video, the tests were conducted with the imitation ACOGs in stock configuration as they came from the factory (i.e. these test results are without a corrective lens in place).
My video showing the appearance differences between the real and imitation ACOGs is here:
• Imitation ACOG vs. Tri...