Complex sentence: In the 1990 western "Quigley Down Under", Tom Selleck's title character uses a Sharps rifle that has a 34 "barrel length, as opposed to the standard 30" length.
Split into simpler sentences: In the 1990 western "Quigley Down Under", Tom Selleck's title character uses a Sharps rifle. The rifle in "Quigley" has a 34 "barrel length, as opposed to the standard 30" length.