Model incorporates the same improvements as Mark II Standard. Offered with 5.5" bull, 6.875" tapered and 10" heavy barrel. A 5.25" tapered barrel was added in 1990, but discontinued in 1994. Blued finish. This model has adjustable target sights. Introduced in 1982. Note: In 1989, approximately 2,000 5.5" bull barrel Mark II pistols, with blue barreled receivers and stainless steel grip frames were produced by Ruger on order from a Ruger distributor. They exist in the 215-25xxx to 215-43xxx serial number range.