I have decided on an Aimpoint for my AR15. Aimpoints rugged construction and decade long constant on battery life suits my HD needs the best. After some research I believe that GG&G combination sight, mount and rear iron site combo packages are about the best deal available. Now comes the rub
Aimpoint CompM2, GG&G Cantilever Aimpoint Ring and GG&G A2 Back Up Iron Sight (BUIS) $545.00
Aimpoint CompM3 GG&G Cantilever Aimpoint Ring and a GG&G A2 Back Up Iron Sight (BUIS) $590.00
Aimpoint CompM4 GG&G Accucam Quick Detach Mounting Base (no BUIS) $700.00.
There is only a slight difference in price between the CompM2 & CompM3. Is there any performance reliability difference? Does anyone know how well Aimpoint supports its older models?
There is a big price jump to the CompM4. Is the performance reliability difference worth the extra investment for a civilian HD/SHTF weapon.
I am leaning towards the CompM3 but any input from experienced Aimpoint users owners would be appreciated.