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== Here's a list of the different series of the Mini 14 by year. ==Here's a list of the different series of the Mini 14 by year.* https://www.rugertalk.com/threads/mini-14-series.725/180 Series * Produced from 1974-1977.* Brass ejects upwards.* Shipped from factory with wood handguard installed.* Original Mini-14, no longer supported by Ruger (i.e., no 180-specific parts available)181 - 186 Series* Produced from 1978-1999.* "Standard" Mini-14* No factory scope mounts, single blade front sight, low round rear peep sight.* Brass ejects upwards.* Still supported by Ruger factory parts.196 - 197 Series* Produced from 2000-2004.* Same as 181-186 Series.187 - 188 Series* Produced from 1982-1995.* Mini-14 Ranch Rifle* Factory Scope Mounts, flip-up rear sight, single blade front sight.* Brass ejects to side to avoid contact with scope.* Still supported by Ruger factory parts.195 - 197 Series* Produced from 1996-2004.* Mini-14 Ranch Rifle.* Same as 187-188 Series.580 - 581 Series* Produced from 2005-Present.* Mini-14 Ranch Rifle.* Winged Rear Peep Sight, Winged (3-blade) Front Sight.* Integrated Scope Mounts.* At some point in the 580 Series, Ruger introduced the "heavier," flanged/tapered barrel which improved accuracy and decreased heat sensitivity (stringing).Twist Rates for Mini 14.Mini14 rate of twist# 1974- 1986 is 1 in 10# 1986- 1997 is 1 in 7# 1997- present is 1 in 9