The TARAC Series:
Alphas: CQB, in room bore offset, subsonic offset (super to sub or sub to super) built to any barrel, bullet combo. Currently NO other system is faster and retains a higher hit rate than using this with a red dot/holo/ALCAN/LPVO. It is nearly instant in its application.
Delta- looks around your barrel. Not inclination limited.
Charlies- Two versions- both allow greater range before a barrel intercedes the line of sight. Both are fast to apply. The Charlie is capable of north of 800moa when set up correctly. An extreme version with North of 1500moa will be available soon. To clarify this is a mirror system. Rail mount or scope mount. It DOES NOT change shooter positions. Extremely durable.
Bravo- a prism unit. We introduced prism units in 2016 long before anyone else. Both rail mount and scope mount are available. Both 100moa and 30mil are standard with 0-60mil custom. The lightest unit weight <7oz.
Extreme Flexibility: EXAMPLE: Scope ZCO 100moa+ travel. Place a 150moa rail on the gun. Which now sets your zero out there past 1000yds. Invert the Bravo which is offset at 100moa. Inverting the Bravo brings you within a 100yd capable zero. Run the scope. At the end of the travel- remove the Bravo- zero the scope and run it again. At the top of the travel- zero the scope add the Bravo upright and run again. That is 300moa of travel (+) with no gaps. Fast/faster than any mechanical base. Very very repeatable. A custom unit could be built to a greater range.
Youtube- Bravo TARAC.
I am not aware of any systems that go negative - first displayed in 2016.
Price range $889-1500 minus coupon codes.
One thing that a mechanical device cannot do- instantly go to another gun.