Complex sentence: The Barrett Model 99 "Big Shot" rifle was first introduced in 1999 and is a latest development of the Barrett Firearms Company (USA), known worldwide by its earlier.50 caliber rifles-semi-automatic M82A1 and bolt-action M95.
Split into simpler sentences: The Barrett Model 99 "Big Shot" rifle was first introduced in 1999 by the Barrett Firearms Company (USA). The company is better known worldwide for its earlier.50 caliber rifles, the semi-automatic M82A1 and bolt-action M95.