Alright

code/game/objects/items/shields.dm

@@ -357,20 +357,41 @@ obj/item/shield/riot/bullet_proof
 	block_chance = 50
 
 /obj/item/shield/riot/implant
-	name = "riot tower shield"
-	desc = "A massive shield that can block a lot of attacks and can take a lot of abuse before breaking." //It cant break unless it is removed from the implant
+	name = "telescoping shield implant"
+	desc = "A compact, arm-mounted telescopic shield. While nigh-indestructible when powered by a host user, it will eventually overload from damage. Recharges while inside its implant."
 	item_state = "metal"
 	icon_state = "metal"
-	block_chance = 30 //May be big but hard to move around to block.
+	block_chance = 50
 	slowdown = 1
 	shield_flags = SHIELD_FLAGS_DEFAULT
 	item_flags = SLOWS_WHILE_IN_HAND
+	var/recharge_timerid
+	var/recharge_delay = 15 SECONDS
 
-/obj/item/shield/riot/implant/run_block(mob/living/owner, atom/object, damage, attack_text, attack_type, armour_penetration, mob/attacker, def_zone, final_block_chance, list/block_return)
-	if(attack_type & ATTACK_TYPE_PROJECTILE)
-		final_block_chance = 60 //Massive shield
-	return ..()
+/// Entirely overriden take_damage.
+/obj/item/shield/riot/implant/take_damage(damage_amount, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, attack_dir, armour_penetration = 0)
+	obj_integrity -= damage_amount
+	if(obj_integrity < 0)
+		obj_integrity = 0
+	if(obj_integrity == 0)
+		if(ismob(loc))
+			var/mob/living/L = loc
+			L.visible_message("<span class='boldwarning'>[src] overloads from the damage sustained!</span>")
+			L.dropItemToGround(src)			//implant component catch hook will grab it.
 
+/obj/item/shield/riot/implant/Moved()
+	. = ..()
+	if(istype(loc, /obj/item/organ/cyberimp/arm/shield))
+		recharge_timerid = addtimer(CALLBACK(src, .proc/recharge), recharge_delay, flags = TIMER_STOPPABLE)
+	else		//extending
+		if(recharge_timerid)
+			deltimer(recharge_timerid)
+			recharge_timerid = null
+
+/obj/item/shield/riot/implant/proc/recharge()
+	obj_integrity = max_integrity
+	if(ismob(loc.loc))		//cyberimplant.user
+		to_chat(loc, "<span class='notice'>[src] has recharged its reinforcement matrix and is ready for use!</span>")
 
 /obj/item/shield/energy
 	name = "energy combat shield"

code/modules/assembly/flash.dm

@@ -229,6 +229,7 @@
 	var/flashcd = 20
 	var/overheat = 0
 	var/obj/item/organ/cyberimp/arm/flash/I = null
+	var/active_light_strength = 7
 
 /obj/item/assembly/flash/armimplant/burn_out()
 	if(I && I.owner)
@@ -248,6 +249,12 @@
 	update_icon(1)
 	return TRUE
 
+/obj/item/assembly/flash/armimplant/Moved(oldLoc, dir)
+	. = ..()
+	if(!ismob(loc))
+		set_light(0)
+	else
+		set_light(7)
 
 /obj/item/assembly/flash/armimplant/proc/cooldown()
 	overheat = FALSE

code/modules/surgery/organs/augments_arms.dm

@@ -20,7 +20,27 @@
 
 	update_icon()
 	SetSlotFromZone()
-	items_list = contents.Copy()
+	for(var/obj/item/I in contents)
+		add_item(I)
+
+/obj/item/organ/cyberimp/arm/proc/add_item(obj/item/I)
+	if(I in items_list)
+		return
+	I.forceMove(src)
+	items_list += I
+	// ayy only dropped signal for performance, we can't possibly have shitcode that doesn't call it when removing items from a mob, right?
+	// .. right??!
+	RegisterSignal(I, COMSIG_ITEM_DROPPED, .proc/magnetic_catch)
+
+/obj/item/organ/cyberimp/arm/proc/magnetic_catch(datum/source, mob/user)
+	var/obj/item/I = source			//if someone is misusing the signal, just runtime
+	if(I in items_list)
+		if(I in contents)		//already in us somehow? i probably shouldn't catch this so it's easier to spot bugs but eh..
+			return
+		I.visible_message("<span class='notice'>[I] snaps back into [src]!</span>")
+		I.forceMove(contents)
+		if(I == holder)
+			holder = null
 
 /obj/item/organ/cyberimp/arm/proc/SetSlotFromZone()
 	switch(zone)
@@ -62,7 +82,7 @@
 	. = ..()
 	if(. & EMP_PROTECT_SELF)
 		return
-	if(prob(15/severity) && owner)
+	if(owner)
 		to_chat(owner, "<span class='warning'>[src] is hit by EMP!</span>")
 		// give the owner an idea about why his implant is glitching
 		Retract()
@@ -75,29 +95,20 @@
 		"<span class='notice'>[holder] snaps back into your [zone == BODY_ZONE_R_ARM ? "right" : "left"] arm.</span>",
 		"<span class='italics'>You hear a short mechanical noise.</span>")
 
-	if(istype(holder, /obj/item/assembly/flash/armimplant))
-		var/obj/item/assembly/flash/F = holder
-		F.set_light(0)
-
 	owner.transferItemToLoc(holder, src, TRUE)
 	holder = null
 	playsound(get_turf(owner), 'sound/mecha/mechmove03.ogg', 50, 1)
 
-/obj/item/organ/cyberimp/arm/proc/Extend(var/obj/item/item)
+/obj/item/organ/cyberimp/arm/proc/Extend(obj/item/item)
 	if(!(item in src))
 		return
 
 	holder = item
 
-	ADD_TRAIT(holder, TRAIT_NODROP, HAND_REPLACEMENT_TRAIT)
 	holder.resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
 	holder.slot_flags = null
 	holder.set_custom_materials(null)
 
-	if(istype(holder, /obj/item/assembly/flash/armimplant))
-		var/obj/item/assembly/flash/F = holder
-		F.set_light(7)
-
 	var/obj/item/arm_item = owner.get_active_held_item()
 
 	if(arm_item)
@@ -223,21 +234,6 @@
 	icon_state = "arm_taser"
 	contents = newlist(/obj/item/gun/energy/e_gun/advtaser/mounted)
 
-/obj/item/organ/cyberimp/arm/gun/emp_act(severity)
-	. = ..()
-	if(. & EMP_PROTECT_SELF)
-		return
-	if(prob(30/severity) && owner && !(organ_flags & ORGAN_FAILING))
-		Retract()
-		owner.visible_message("<span class='danger'>A loud bang comes from [owner]\'s [zone == BODY_ZONE_R_ARM ? "right" : "left"] arm!</span>")
-		playsound(get_turf(owner), 'sound/weapons/flashbang.ogg', 100, 1)
-		to_chat(owner, "<span class='userdanger'>You feel an explosion erupt inside your [zone == BODY_ZONE_R_ARM ? "right" : "left"] arm as your implant breaks!</span>")
-		owner.adjust_fire_stacks(20)
-		owner.IgniteMob()
-		owner.adjustFireLoss(25)
-		crit_fail = 1
-		organ_flags |= ORGAN_FAILING
-
 /obj/item/organ/cyberimp/arm/flash
 	name = "integrated high-intensity photon projector" //Why not
 	desc = "An integrated projector mounted onto a user's arm that is able to be used as a powerful flash."
@@ -275,6 +271,12 @@
 	desc = "A deployable riot shield to help deal with civil unrest."
 	contents = newlist(/obj/item/shield/riot/implant)
 
+/obj/item/organ/cyberimp/arm/shield/Extend(obj/item/I)
+	if(item.obj_integrity == 0)				//that's how the shield recharge works
+		to_chat(owner, "<span class='warning'>[I] is still too unstable to extend. Give it some time!</span>")
+		return FALSE
+	return ..()
+
 /obj/item/organ/cyberimp/arm/shield/emag_act()
 	. = ..()
 	if(obj_flags & EMAGGED)