Complex sentence: The L118 Light Gun is a 105 mm towed howitzer, originally produced for the British Army in the 1970s and widely exported since, including to the United States, where a modified version is known as the M119A1.
Split into simpler sentences: The L118 Light Gun is a 105 mm towed howitzer. It was originally produced for the British Army in the 1970s and has been widely exported since, including to the United States, where a modified version is known as the M119A1.