Complex sentence: There are approximately 1.5 million registered small firearms in the country, out of which 226 000 are short firearms (pistols, revolvers) with the rest being long firearms (rifles, shotguns).
Split into simpler sentences: There are approximately 1.5 million registered small firearms in the country. Out of those, 226 000 are short firearms (pistols, revolvers) with the rest being long firearms (rifles, shotguns).