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 ?
Barrel length options are 26 and 28 inches and both wear a steel ventilated rib with a red bar sight at the muzzle and a gold bead in the middle.
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 5.7 or 5.8 pounds.