diff --git a/cev_eris.dme b/cev_eris.dme
index eff9506c3c3..445138e0ad9 100644
--- a/cev_eris.dme
+++ b/cev_eris.dme
@@ -1144,6 +1144,7 @@
 #include "code\game\objects\items\weapons\tools\crowbars.dm"
 #include "code\game\objects\items\weapons\tools\hammer.dm"
 #include "code\game\objects\items\weapons\tools\hemostats.dm"
+#include "code\game\objects\items\weapons\tools\karl.dm"
 #include "code\game\objects\items\weapons\tools\knives.dm"
 #include "code\game\objects\items\weapons\tools\misc.dm"
 #include "code\game\objects\items\weapons\tools\multitool.dm"
diff --git a/code/game/objects/items/weapons/tools/karl.dm b/code/game/objects/items/weapons/tools/karl.dm
new file mode 100644
index 00000000000..698819df5b3
--- /dev/null
+++ b/code/game/objects/items/weapons/tools/karl.dm
@@ -0,0 +1,188 @@
+/obj/item/tool/karl
+	name = "K.A.R.L"
+	desc = "Kinetic Acceleration Reconfigurable Lodebreaker. Rock and stone to the bone, miner!"
+	flags = CONDUCT
+	slot_flags = SLOT_BELT
+	icon = 'icons/obj/karl_mining.dmi'
+	icon_state = "karl_axe"
+	item_state = "karl_axe"
+	w_class = ITEM_SIZE_BULKY
+	price_tag = 2500
+	matter = list(MATERIAL_STEEL = 6)
+	origin_tech = list(TECH_MATERIAL = 1, TECH_ENGINEERING = 1)
+	attack_verb = list("hit", "pierced", "sliced", "attacked")
+	hitsound = 'sound/weapons/melee/heavystab.ogg'
+
+	// Damage related
+	force = WEAPON_FORCE_DANGEROUS
+	armor_divisor = ARMOR_PEN_HALF // It's a pickaxe. It's destined to poke holes in things, even armor.
+	throwforce = WEAPON_FORCE_NORMAL
+	sharp = TRUE
+	structure_damage_factor = STRUCTURE_DAMAGE_DESTRUCTIVE // Drills and picks are made for getting through hard materials
+	embed_mult = 1.2 // Digs deep
+
+	// Spawn and value related
+	spawn_blacklisted = TRUE
+	rarity_value = 24
+
+	// Turn on-off related
+	toggleable = TRUE
+	tool_qualities = list(QUALITY_DIGGING = 10, QUALITY_PRYING = 10, QUALITY_CUTTING = 5) // So it still shares its switch off quality despite not yet being used.
+	switched_off_qualities = list(QUALITY_DIGGING = 10, QUALITY_PRYING = 10, QUALITY_CUTTING = 5)
+	switched_on_qualities = list(QUALITY_DIGGING = 30, QUALITY_WELDING = 10)
+	suitable_cell = /obj/item/cell/medium/high
+	use_power_cost = 1.5
+	passive_power_cost = 0.01
+	glow_color = COLOR_BLUE_LIGHT
+
+	// Gun-mode related
+	action_button_name = "Switch K.A.R.L Mode"
+	var/gunmode = FALSE  // TRUE when KARL is in gun mode
+	var/obj/item/gun/energy/plasma/installation = /obj/item/gun/energy/plasma	// The inbuilt gun. Store as path to initialize a new gun on creation.
+	var/projectile			// Holder for bullettype
+	var/shot_sound 			// What sound should play when the gun fires
+	var/reqpower = 10		// Power needed to shoot
+
+/obj/item/tool/karl/New()
+	. = ..()
+
+	// Init inbuilt gun
+	if(ispath(installation))
+		installation = new installation
+		projectile = installation.projectile_type
+		shot_sound = installation.fire_sound
+
+/obj/item/tool/karl/Initialize()
+	. = ..()
+	verbs += /obj/item/tool/karl/proc/toggle_mode_verb
+
+/obj/item/tool/karl/Destroy()
+	QDEL_NULL(installation)
+	. = ..()
+
+/obj/item/tool/karl/update_icon()
+	cut_overlays()
+
+	var/karl_icon = "karl"
+	if(gunmode)
+		karl_icon += "_gun"
+	else
+		karl_icon += "_axe"
+		if(switched_on)
+			karl_icon += "_on"
+
+	icon_state = karl_icon  // Item sprite
+
+	if(wielded)
+		karl_icon += "_wielded"
+
+	item_state = karl_icon  // On-suit sprite
+
+/obj/item/tool/karl/equipped(mob/user)
+	..()
+	update_icon()
+
+/obj/item/tool/karl/dropped(mob/user)
+	..()
+	update_icon()
+
+/obj/item/tool/karl/attack_self(mob/user)
+	if(isBroken)
+		to_chat(user, SPAN_WARNING("\The [src] is broken."))
+		return
+	if(gunmode)
+		if(cell)
+			if(!cell.fully_charged())
+				var/pumping_time = wielded ? 1 SECOND : 2 SECONDS
+				if(do_after(user, pumping_time))
+					if(cell)  // Check the cell is still there in case big brain player chose to remove it during pumping
+						cell.give(use_power_cost * 1 SECOND) // Enough to use the tool during 1 second
+						to_chat(user, SPAN_NOTICE("You recharge \the [src] by pumping it, cell charge at [round(cell.percent())]%."))
+						// Continue pumping till user cancels the pumping
+						attack_self(user)
+			else
+				to_chat(user, SPAN_NOTICE("\The [src]\'cell is fully charged'."))
+		else
+			to_chat(user, SPAN_NOTICE("\The [src] is missing a cell to recharge."))
+		return
+	..()
+	return
+
+/obj/item/tool/karl/turn_on(mob/user)
+	. = ..()
+	if(.)
+		to_chat(user, SPAN_NOTICE("A dangerous energy blade now covers the edges of the tool."))
+
+/obj/item/tool/karl/turn_off(mob/user)
+	to_chat(user, SPAN_NOTICE("The energy blade swiftly retracts."))
+	..()
+
+// Same values than /obj/item/proc/use_tool
+/obj/item/tool/karl/use_tool(mob/living/user, atom/target, base_time, required_quality, fail_chance, required_stat, instant_finish_tier = 110, forced_sound = null, sound_repeat = 2.5 SECONDS)
+	. = ..()  // That proc will return TRUE only when everything was done right, and FALSE if something went wrong, ot user was unlucky.
+
+	// Recharge upon successfull use when switched off
+	if(. && !switched_on && cell)
+		cell.give(use_power_cost * 1 SECOND) // Enough to use the tool during 1 second
+
+/obj/item/tool/karl/proc/toggle_mode_verb()
+	set name = "Unique Action"
+	set category = "Object"
+	set src in view(1)
+
+	toggle_karl_mode(usr)
+
+/obj/item/tool/karl/proc/toggle_karl_mode(mob/user)
+	gunmode = !gunmode
+	to_chat(user, SPAN_NOTICE("\The [src] switches to [gunmode ? "gun" : "tool"] mode."))
+	update_icon()
+	update_wear_icon()
+
+/obj/item/tool/karl/afterattack(atom/target, mob/user, proximity, params)
+
+	if(isBroken)
+		to_chat(user, SPAN_WARNING("\The [src] is broken."))
+		return
+
+	if(gunmode)
+		if(!wielded)
+			to_chat(user, SPAN_WARNING("\The [src] must be wielded to shoot."))
+			return
+		if(!cell?.checked_use(reqpower))
+			to_chat(user, SPAN_WARNING("[src] battery is dead or missing."))
+			return
+		shootAt(target, user.targeted_organ)
+		user.setClickCooldown(1 SECOND)
+		return
+
+	return ..()
+
+/obj/item/tool/karl/proc/shootAt(var/mob/living/target, def_zone)
+
+	// Check source and destination
+	var/turf/T = get_turf(src)
+	var/turf/U = get_turf(target)
+	if(!istype(T) || !istype(U))
+		return
+
+	// Launching projectile
+	var/obj/item/projectile/A = new projectile(loc)
+	playsound(loc, shot_sound, 75, 1)
+
+	// Local pressure affect damages
+	var/datum/gas_mixture/environment = T.return_air()
+	var/env_pressure = environment ? environment.return_pressure() : ONE_ATMOSPHERE
+	// Full damage if pressure < 0.5 atmosphere, one-fourth of damage in > 1 atmosphere, linear between those values
+	var/dmg = WEAPON_FORCE_DANGEROUS * clamp(1 - 0.75 * (env_pressure - 0.5 * ONE_ATMOSPHERE) / (0.5 * ONE_ATMOSPHERE), 0.25, 1)
+	// Burn because it's a plasma shot (installation gun)
+	A.damage_types[BURN] = dmg
+
+	// Shooting Code
+	A.launch(target, def_zone)
+
+/obj/item/tool/karl/ui_action_click(mob/user, actiontype)
+	switch(actiontype)
+		if("Tool information")
+			nano_ui_interact(user)
+		else
+			toggle_karl_mode(user)
diff --git a/code/modules/trade/datums/trade_stations_presets/1-common/asterstradecapital.dm b/code/modules/trade/datums/trade_stations_presets/1-common/asterstradecapital.dm
index 1bac265881b..a73acc4799a 100644
--- a/code/modules/trade/datums/trade_stations_presets/1-common/asterstradecapital.dm
+++ b/code/modules/trade/datums/trade_stations_presets/1-common/asterstradecapital.dm
@@ -52,6 +52,7 @@
 		),
 		"Mining Gear" = list(
 			/obj/machinery/mining/deep_drill,
+			/obj/item/tool/karl,
 			/obj/item/tool/pickaxe,
 			/obj/item/tool/pickaxe/excavation,
 			/obj/item/storage/bag/ore,
diff --git a/icons/mob/items/lefthand.dmi b/icons/mob/items/lefthand.dmi
index 0d71a43c56e..371b4415c80 100644
Binary files a/icons/mob/items/lefthand.dmi and b/icons/mob/items/lefthand.dmi differ
diff --git a/icons/mob/items/righthand.dmi b/icons/mob/items/righthand.dmi
index 7af168d9676..ce1173402f3 100644
Binary files a/icons/mob/items/righthand.dmi and b/icons/mob/items/righthand.dmi differ
diff --git a/icons/obj/karl_mining.dmi b/icons/obj/karl_mining.dmi
new file mode 100644
index 00000000000..87f0475c730
Binary files /dev/null and b/icons/obj/karl_mining.dmi differ
diff --git a/maps/CEVEris/_CEV_Eris.dmm b/maps/CEVEris/_CEV_Eris.dmm
index 982dee97da9..4e465b64dd8 100644
--- a/maps/CEVEris/_CEV_Eris.dmm
+++ b/maps/CEVEris/_CEV_Eris.dmm
@@ -52009,8 +52009,8 @@
 /obj/machinery/button/remote/blast_door{
 	id = "last_shelter";
 	name = "Last shelter lock control";
-	req_access = list(74);
-	pixel_x = -24
+	pixel_x = -24;
+	req_access = list(74)
 	},
 /obj/machinery/atmospherics/unary/vent_pump/on{
 	dir = 1
@@ -59945,6 +59945,7 @@
 /obj/item/clothing/suit/space/void/mining,
 /obj/item/clothing/mask/breath,
 /obj/item/device/scanner/mining,
+/obj/item/tool/karl,
 /turf/simulated/shuttle/floor/mining{
 	icon_state = "2,21"
 	},
@@ -60209,6 +60210,7 @@
 /obj/item/clothing/suit/space/void/mining,
 /obj/item/clothing/mask/breath,
 /obj/item/device/scanner/mining,
+/obj/item/tool/karl,
 /turf/simulated/shuttle/floor/mining{
 	icon_state = "2,20"
 	},
@@ -60472,6 +60474,7 @@
 /obj/item/clothing/suit/space/void/mining,
 /obj/item/clothing/mask/breath,
 /obj/item/device/scanner/mining,
+/obj/item/tool/karl,
 /turf/simulated/shuttle/floor/mining{
 	icon_state = "2,19"
 	},
@@ -100121,8 +100124,8 @@
 	dir = 4;
 	id = "maint_hatch_acolyte";
 	name = "Maintenance Hatch Control";
-	req_access = null;
-	pixel_x = -24
+	pixel_x = -24;
+	req_access = null
 	},
 /obj/structure/table/woodentable,
 /obj/structure/sign/faction/neotheology_cross/gold{
@@ -104768,10 +104771,10 @@
 "sfv" = (
 /obj/machinery/door/firedoor,
 /obj/machinery/door/blast/shutters{
+	dir = 2;
 	id = "maint_hatch_church_preacher";
 	layer = 3.3;
-	name = "Maintenance Hatch";
-	dir = 2
+	name = "Maintenance Hatch"
 	},
 /obj/structure/disposalpipe/segment,
 /obj/effect/window_lwall_spawn/smartspawn,