Go to the Historical Breechloading Smallarms Association (hbsa-uk.org/knowledge-and-research/) and check the WW1 Commemorative Film for :
Chandler Trench Periscope adaption of Long Lee-Enfield Rifle - demonstration.
Hope this is what you want !
“There are invisible rulers who control the destinies of millions. It is not generally realized to what extent the words and actions of our most influential public men are dictated by shrewd persons operating behind the scenes.”
Springfield Armory National Historic Site has an articulated stocked Springfield Rifle. This illustration was used in my second book (Sharpshooters: Marksmen Through the Ages)
BTW, during the American Civil War, Union soldiers at Vicksburg used mirrors to aim their rifles at the Confederaates and this allowed them to shoot without exposing themselves to retaliatory fire. By the time they reached Georgia, they drilled holes in their stocks and stuck the wire handle of a hand mirror for the same purpose. This predates the periscope rifles of WW I.
Events are coming full circle. We are now at point where night and camouflage are not enough to hide from thermal imagers. The next logical step is for the sniper's scope to be connected to a remote screen and firing control so that he can stay under cover while still aiming and firing. That means a powered, finely adjustable "fixed rest" for the rifle.
The next question is how can the thermal signature of the weapon and its sight be kept within safe limits at the same time?
It may be that numerous "thermal decoys" are going to be needed, and question is how they should be powered and controlled to maximize effectiveness and longevity.
“There are invisible rulers who control the destinies of millions. It is not generally realized to what extent the words and actions of our most influential public men are dictated by shrewd persons operating behind the scenes.”
PM
