Just a quick note guys, 99.9% of the time if a sparc is flickering it is because the battery cap is not on tight enough.
On another note as you might imagine I have done some fairly extensive durability testing on both the Strikefire and Sparc. I would have to give the edge to the sparc. I have a couple of longterm endurance test units that have been through numerous amounts of tests including heat(however hot mapp gets), thousands and thousands of rounds of full auto AK, literally thrown around/against walls and beaten with mallets, and they continue to function to this day.
All in all the Sparcs are a great little sight with an affordable price tag that has an extremely low failure rate and generally the few that do fail(below.05%) are caused by being assembled incorrectly, which is just reality when humans are inv.
Last edited by Scott_at_Vortex; 05-06-2011 at 12:32 PM..