An item attached to the breech end and integral to a carbine, machine gun, pistol, rifle, or the like. It may be a fixed or adjustable cross blade with a u-or v-shaped notch or aperture, or it may have elevation and windage adjustment knobs, slides, and graduated scales and be provided with aperture disks.
NSN 6220-00-761-9520
NSN 6150-01-526-9313
NSN 5915-00-708-1518
NSN 5925-00-452-1270
NSN 5945-01-134-0368
NSN 6650-00-242-7961
NSN 6220-00-764-0404
NSN 5855-01-624-1206
NSN 5990-01-378-7349
NSN 5855-01-549-3666
NSN 5960-01-624-1170
NSN 6130-01-197-2920