Added a blank 5.56 projectile and box (#15401)

code/modules/projectiles/ammunition/boxes.dm

@@ -341,6 +341,11 @@
 	icon_state = "5.56APc"
 	ammo_type = /obj/item/ammo_casing/a556/polymer
 
+/obj/item/ammo_magazine/a556/carbine/blank
+	name = "carbine magazine (5.56mm blank)"
+	icon_state = "5.56c_practice"
+	ammo_type = /obj/item/ammo_casing/a556/blank
+
 /obj/item/ammo_magazine/a556/makeshift
 	name = "makeshift magazine (5.56mm)"
 	icon_state = "5.56m"

code/modules/projectiles/ammunition/bullets.dm

@@ -258,6 +258,10 @@
 	desc = "A 5.56mm polymer bullet casing."
 	projectile_type = /obj/item/projectile/bullet/rifle/a556/polymer
 
+/obj/item/ammo_casing/a556/blank
+	desc = "A 5.56mm blank casing."
+	projectile_type = /obj/item/projectile/bullet/blank
+
 /obj/item/ammo_casing/rocket
 	name = "rocket shell"
 	desc = "A high explosive designed to be fired from a launcher."

html/changelogs/fluffyghost.yml

@@ -0,0 +1,41 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes:
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.
+author: FluffyGhost
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes:
+  - rscadd: "Added a blank 5.56 (a556) projectile and box (magazine)."