fixes

readded toxins tech requirement to BRPD design, i thought it was the
item itself derp
fixed a bug where BRPD wouldn't make a beam if you clicked pipes
directly
added a period for consistency

code/game/machinery/doppler_array.dm

@@ -156,7 +156,7 @@ var/list/doppler_arrays = list()
 	if(!miss_by)
 		messages += "Explosion size matches target."
 	else
-		messages += "Target ([explosion_target]) missed by : [miss_by]"
+		messages += "Target ([explosion_target]) missed by : [miss_by]."
 	if(tmp_tech > toxins_tech)
 		toxins_tech.level = tmp_tech
 		messages += "Toxins technology level upgraded to [toxins_tech.level]. Swipe a technology disk to save data."

code/game/objects/items/weapons/rpd.dm

@@ -218,7 +218,7 @@ var/list/pipemenu = list(
 			// If the object we are clicking on has a valid RPD interaction for just that specific object, do that and nothing else.
 			// Example: clicking on a pipe with a RPD in rotate mode should rotate that pipe and ignore everything else on the tile.
 			if(ranged)
-				user.Beam(target, icon_state="rped_upgrade", icon='icons/effects/effects.dmi', time=5)
+				user.Beam(T, icon_state="rped_upgrade", icon='icons/effects/effects.dmi', time=5)
 			return
 
 	// If we get this far, we have to check every object in the tile, to make sure that none of them block RPD usage on this tile.

code/modules/research/designs/bluespace_designs.dm

@@ -84,7 +84,7 @@
 /datum/design/rpd
 	name = "Bluespace Rapid Pipe Dispenser (BRPD)"
 	desc = "Similar to the Rapid Pipe Dispenser, lets you rapidly dispense pipes. Now at long range!"
-	req_tech = list("bluespace" = 3)
+	req_tech = list("bluespace" = 3, "toxins" = 6)
 	id = "brpd"
 	build_type = PROTOLATHE
 	materials = list(MAT_METAL = 75000, MAT_GLASS = 37500, MAT_SILVER = 3000)