With iron sights
, the aperture will need to be replaced with a new one that now has a dimpled pin that will not ride out as quickly or as often.
If for some reason the red dot fails or disappears, the shooter just naturally transitions to the iron sights
. I found they were still a tad short on my sample, but more on that in a moment.
IF the iron sight
's windage screw is difficult to adjust, it may just be that the sight's mount screw is too tight.
Close-range engagement iron sights
on top are used for close quarters battle.
Traditionally, I have shied away from using visible lasers, especially on a handgun, choosing instead to go with a slide-mounted red dot or conventional iron sights
. The reason has to do with holdovers.
What's unique about the RBU is that it integrates fixed iron sights
into the base plate that replaces the rear sight.
For both weapons, the back-up iron sight
(BUIS), NSN 1005-01-484-8000, replaces the removeable carrying handle, NSN 1005-01-465-0-101.
I didn't get an iron sight
in the deal but didn't think much about it either because I had given no thought to keeping it.
Generally speaking, they're probably right, but I tend to think the iron sight
still has a place.
Another popular iron sight
configuration is the Heine Straight Eight, which consists of only two dots.
GG & G introduces its A2 Spring-Actuated Back-Up Iron Sight
Because of manufacturing problems, locking bars for the backup iron sight
(BUIS) for the M16A4 rifle and M4/M4A1 carbine are breaking.