bar sight

bar sight

[′bär ‚sīt]
(ordnance)
The rear sight of a firearm, consisting of a movable bar, usually with an open notch.
References in periodicals archive ?
Also available is a 12-gauge Realtree APG M3000 with pistol grip, 24-inch barrel, IC, M and XFT chokes, and red bar sights.
The 20s are fitted with red bar sights and weight is 5.
Forget three-dot and dot bar sights on a fighting gun--they don't work.