05-05-2011, 04:35 PM
If you look at the original AR10 from Gene Stoner's design in 1955, it had an elevation wheel in the rear sight housing. This reappeared on the M16A2 about 30 years later. I actually prefer the Model 601/602 AR15 & M16 to the A1 and A2, but the A2 is set up to be a more AMU or Marine Marksmanship Unit rifle for the KD range than a fighting rifle, as long as the 3-round burst trigger is replaced.
I have seen what LR1955 is talking about when a slightly bent front sight post gets zeroed dead on for windage with the rear sight, but then needs a quarter or 3/4 turn in elevation, and the windage is now off.
The PRI flip-up sight solves this problem by providing a fully-hooded circular front sight, so the likelihood of it getting bent or damaged is reduced significantly.
LRRPF52
I have seen what LR1955 is talking about when a slightly bent front sight post gets zeroed dead on for windage with the rear sight, but then needs a quarter or 3/4 turn in elevation, and the windage is now off.
The PRI flip-up sight solves this problem by providing a fully-hooded circular front sight, so the likelihood of it getting bent or damaged is reduced significantly.
LRRPF52