battlesight vs battle sight

battlesight and battle sight both are nouns.

Word	Noun	Adjective	Verb	Adverb
battlesight	Yes	No	No	No
battle sight	Yes	No	No	No

As nouns, battlesight and battle sight are synonyms defined as:

battlesight and battle sight: an arrangement of sights that makes possible the rapid aiming of a firearm at short ranges

battlesight (noun)	battle sight (noun)
an arrangement of sights that makes possible the rapid aiming of a firearm at short ranges	an arrangement of sights that makes possible the rapid aiming of a firearm at short ranges