[MIRROR] The day has come gamers, the mosin nerf/rework (#2883)

* The day has come gamers, the mosin nerf/rework (#56319)

* THE NERF

* fixes a dumb mistake

* Sanity check and second thoughts

* mosin jamming

* adds the cleaning supplies, sprites, slight changes to dmg and jamming and HNNNG ONE LAST BUG

* adds maint kit to russian surplus, second try at fixing

* everything is fixed now :)

* finishing touches

* Last fix?

* fix

* fix var names

* a new sound and few more fixes

* add /brand_new variant to all ert/special spawned mosins, added a check if bolt is locked

* Bolt_locked is true when bolt is open 😂

* added a clamp just in case

Co-authored-by: Sparkezel <1haslo4@ gmail.com>

* The day has come gamers, the mosin nerf/rework

* Update to use our realism

Co-authored-by: Sparkezel <53384660+Sparkezel@users.noreply.github.com>
Co-authored-by: Sparkezel <1haslo4@ gmail.com>
Co-authored-by: Gandalf2k15 <jzo123@hotmail.com>

code/game/objects/items/storage/toolbox.dm

@@ -230,6 +230,19 @@
 	new /obj/item/ammo_box/a762(src)
 	new /obj/item/ammo_box/a762(src)
 
+/obj/item/storage/toolbox/maint_kit
+	name = "gun maintenance kit"
+	desc = "It contains some gun maintenance supplies"
+	icon_state = "maint_kit"
+	inhand_icon_state = "ammobox"
+	drop_sound = 'sound/items/handling/ammobox_drop.ogg'
+	pickup_sound = 'sound/items/handling/ammobox_pickup.ogg'
+
+/obj/item/storage/toolbox/maint_kit/PopulateContents()
+	new /obj/item/gun_maintenance_supplies(src)
+	new /obj/item/gun_maintenance_supplies(src)
+	new /obj/item/gun_maintenance_supplies(src)
+
 /obj/item/storage/toolbox/infiltrator
 	name = "insidious case"
 	desc = "Bearing the emblem of the Syndicate, this case contains a full infiltrator stealth suit, and has enough room to fit weaponry if necessary."