Ok heres the deal. I have written various blurps and opinions of mounts of the years of this and a bunch of other forums.
Here is the meat and potatos:
Larue came to the scene in Ar accessory infancy a little over 10 years ago. ARMS was the only game in town, and made a complete shit mount/product. Larue was the first mount of decent quality that was QD. That is how they grew their brand, making mounts for everything and one of the best rail systems (for its time) out there.
Larue also has some pretty big Cons compared to the rest of the market. They require a tool to adjust to different rails (not all are the same). They Can and WILL gouge and marr your rails if the adjustment settings arent perfect. They WILL shoot loose over time. They Are NOT RTZ, atleast as they claim. For a RD or low power variable they are decent, but still inferior to designs like Bobro, ADM, GDI.
Larue also has not done shit in about 10 years other than get into the rifle game. Their mountss have not changed/evolved and either have their rails. They have used their market possition to sit on their ass and do zero inovation as far as mounts/rails (bassicaly anything non gun production goes).
Larue does however make a QD mount for every fucking device ever concvieved to fit to a 1913 Rail. For this reason, I still use a couple of their mounts for things like Atlas bipods or IR lasers.
ADM is still shit quality and design compared to other like Bobro. They are not machined as well, they are not RTZ and they are an inferior design. They allow a toolest adjustment, but you still need to index the bolt to fit the rails. ADM does have more bearing surface than Larue however.
Bobro is the shit. They are auto indexing, meaning they require no adjustment and fit the rail. They are one of the beter RTZ(NO QD is true RTZ, and it could be argued whenever u removed even a fixed mount, you need to rezero). Fit and finish is top end.
GDI are also quality but are stupid expensive. Paying $500 for a mount is fucking bonkers.
Most people would be better served with a quality 1 piece mount like Badger, SPHUR, KAC,ect. Unless you are using the optic to test or shoot on multiple rifles (that will all require a rezero) or are using multiple optics on the same gun (Like a Eotech or a 2.5-10x24NF depending on mission) then get a good fixed mount.
Fixed mounts are cheaper (generally), lighter, and are one less variable to go wrong. With a good torque wrench like the BORKA, you can take off and reinstall your optic in less than 30 seconds.
Conclusion:
GDI/Bobro > ADM/Larue
Fixed > QD
Don't listen to someone when they say " I own blah blah blah and it works" . One or two examples out of thousands mean shit. The industry has already weeded out what works and doesn't....so your little insignificant sample means jack shit. Someone who shoots a couple times a year at dirt piles doesn't even begin to understand what they don't know.
