Interesting Thread, ANTIBODY; I think PDF members and people coming across the web to this Thread should know the basics and information on Weapon Systems that shoot around the corners as well as long distances verity of weapons have been introduced. This is broad Topic.
A weapon that shoots around the corners is the first of its kind. The very first weapon is from Israel simply named "Corner Shot". Corner Shot is a new weapon system designed for urban combat which enables the user to observe and engage a target from behind a corner without exposing any body parts.
The Corner Shot consists of a segmented, assault rifle-type folding stock, pistol-grip contraption, onto which is attached a pistol of choice and a compact, detachable color video camera. A lateral left and right swinging hinge mechanism and a remote trigger control allow the user to drop the hammer on targets from behind the safety and comfort of any right-angled structure.
However there are many weapons developed as Non Line of sight weapons without having folding stock never the less both have their usage in urban warfare and on in the battlefield.
There are also NLOS-C [non line of sight cannon] as well as NLOS-LS [launch System].