The holds will not be accurate for 308 with the BDC.
Chevron is the type of reticle, Amber/Gold is the color of the reticle. Please email us at TechSales@OpticsPlanet.com with the item number to the specific model you have in your cart and we will be happy to confirm any information you need.
Yes, this will mount to the top picatinny rail of a HK MR556 A1.
Please contact the manufacturer for information on your question. https://www.trijicon.com/contact-us
This ACOG is calibrated for 62g M855 ammo fired from a 14.5 inch barrel. It will mount directly to your flat top rail.
Up to 15 years, according to the manufacturer. I have a ten year old amber dot Reflex from them that is still kickin’.
The ballistics will be extremely similar and the reticle can be used for either caliber.
There are RMR models that include the required mount, you will just need to ensure an RM35 mount is included, like the link below:
https://www.opticsplanet.com/trijicon-3-25-adj-red-rmr-type-2.html?_iv_included-accessories=rm35-acog
Yes, you can.