get the rifle
It does stand for something. It stands for Fusil Automatique Léger which means ("light assault rifle") in french.
MAY STAND FOR GLENFIELD.
Designated Marksman Rifle. To put it bluntly, It's a sniper rifle.
Browning Bolt Rifle.
Colt Automatic Rifle
BAR stands for Browning Automatic Rifle, not browning association rifle.
short rifle/long rifle
You mean what does it stand for? It stands for "Adaptive Combat Rifle".
The letters DL stand for the word Deluxe.
It is the Carbine (short rifle) version of the AR15. AR stands for Armalite Rifle. It is a semi auto rifle.
A stand used for stabilizing and supporting a sniper rifle is commonly referred to as a bipod. It typically attaches to the rifle's forend or front end and allows for more precise aiming and steady shooting.