Well, it's long guns, so it includes rifles AND shotguns, but here it is:
From top to bottom, those are:
Winchester model 1897 12 gauge shotgun, built in 1901 (32" barrel)
Arsenal SA M-7S (semiauto milled receiver AK-47) with Kobra sight
Uberti 1866 rifle, 44-40
Ruger 77/22 22LR bolt action with Bushnell 4x target scope (my first rifle)
Akkar (Turkish) 12 gauge hammered coach gun
M1 carbine (Inland)
PTR-91 (semiauto G3 clone)
DSA SA58 Para carbine (semiauto FAL with 16.25" barrel and folding stock)
Taurus model 62 22LR pump action carbine
M1 Garand, CMP Service Grade, Springfield Armory mfd June 1945
Browning Citori 525 12 gauge O/U shotgun
Swedish Mauser M38, Husqvarna Vapenfabriks 1942
Browning BL-22 22LR lever action with scope
1903A3, Smith-Corona, unissued condition
M1 Garand, CMP Collector Grade, SA mfd 1955