Nerfs circuit pneumatic cannons and guns with extra sanity checks.

code/modules/integrated_electronics/core/assemblies.dm

@@ -615,6 +615,11 @@
 		return
 	..()
 
+/obj/item/electronic_assembly/can_trigger_gun(mob/living/user) //sanity checks against pocket death weapon circuits
+	if(!can_fire_equipped || !user.is_holding(src))
+		return FALSE
+	return ..()
+
 /obj/item/electronic_assembly/default //The /default electronic_assemblys are to allow the introduction of the new naming scheme without breaking old saves.
 	name = "type-a electronic assembly"
 

code/modules/integrated_electronics/core/integrated_circuit.dm

@@ -402,3 +402,8 @@ a creative player the means to solve many problems.  Circuits are held inside an
 		return TRUE
 
 	return FALSE
+
+/obj/item/integrated_circuit/can_trigger_gun(mob/living/user)
+	if(!user.is_holding(src))
+		return FALSE
+	return ..()

code/modules/integrated_electronics/subtypes/weaponized.dm

@@ -81,9 +81,13 @@
 		to_chat(user, "<span class='notice'>There's no weapon to remove from the mechanism.</span>")
 
 /obj/item/integrated_circuit/weaponized/weapon_firing/do_work()
-	if(!installed_gun || !installed_gun.handle_pins())
+	if(!assembly || !installed_gun)
 		return
-	if(!isturf(assembly.loc) && !(assembly.can_fire_equipped && ishuman(assembly.loc)))
+	if(isliving(assembly.loc))
+		var/mob/living/L = assembly.loc
+		if(!assembly.can_fire_equipped || !L.is_holding(assembly) || !installed_gun.can_trigger_gun(L)) //includes pins, hulk and other chunky fingers checks.
+			return
+	else if(!isturf(assembly.loc) || !installed_gun.handle_pins())
 		return
 	set_pin_data(IC_OUTPUT, 1, WEAKREF(installed_gun))
 	push_data()
@@ -92,18 +96,17 @@
 	var/datum/integrated_io/mode1 = inputs[3]
 
 	mode = mode1.data
-	if(assembly)
-		if(isnum(xo.data))
-			xo.data = round(xo.data, 1)
-		if(isnum(yo.data))
-			yo.data = round(yo.data, 1)
+	if(isnum(xo.data))
+		xo.data = round(xo.data, 1)
+	if(isnum(yo.data))
+		yo.data = round(yo.data, 1)
 
-		var/turf/T = get_turf(assembly)
-		var/target_x = CLAMP(T.x + xo.data, 0, world.maxx)
-		var/target_y = CLAMP(T.y + yo.data, 0, world.maxy)
+	var/turf/T = get_turf(assembly)
+	var/target_x = CLAMP(T.x + xo.data, 0, world.maxx)
+	var/target_y = CLAMP(T.y + yo.data, 0, world.maxy)
 
-		assembly.visible_message("<span class='danger'>[assembly] fires [installed_gun]!</span>")
-		shootAt(locate(target_x, target_y, T.z))
+	assembly.visible_message("<span class='danger'>[assembly] fires [installed_gun]!</span>")
+	shootAt(locate(target_x, target_y, T.z))
 
 /obj/item/integrated_circuit/weaponized/weapon_firing/proc/shootAt(turf/target)
 	var/turf/T = get_turf(src)
@@ -246,26 +249,30 @@
 	if(!A || A.anchored || A.throwing || A == assembly || istype(A, /obj/item/twohanded) || istype(A, /obj/item/transfer_valve))
 		return
 
-	if(!AT || !AT.air_contents)
+	var/obj/item/I = get_object()
+	var/turf/T = get_turf(I)
+	if(!T)
+		return
+	if(isliving(I.loc))
+		var/mob/living/L = I.loc
+		if(!I.can_trigger_gun(L)) //includes hulk and other chunky fingers checks.
+			return
+		if(HAS_TRAIT(L, TRAIT_PACIFISM) && A.throwforce)
+			to_chat(L, "<span class='notice'> [I] is lethally chambered! You don't want to risk harming anyone...</span>")
+			return
+	else if(T != I.loc)
 		return
 
-	if (istype(assembly.loc, /obj/item/implant/storage)) //Prevents the more abusive form of chestgun.
+	if(!AT || !AT.air_contents)
 		return
 
 	if(max_w_class && (A.w_class > max_w_class))
 		return
 
-	if(!assembly.can_fire_equipped && ishuman(assembly.loc))
-		return
-
 	// Is the target inside the assembly or close to it?
 	if(!check_target(A, exclude_components = TRUE))
 		return
 
-	var/turf/T = get_turf(get_object())
-	if(!T)
-		return
-
 	// If the item is in mob's inventory, try to remove it from there.
 	if(ismob(A.loc))
 		var/mob/living/M = A.loc