How to Identify the Model of your Ruger® Pistol
Standard Auto Pistol -the original gun produced by Ruger®
- Produced in blue steel only
- Light, taped barrels only
- Fixed sights only
- Magazine button is on right side of magazine
- No last shot hold open
- Magazine release at heel of grip
Early Mark I
- Blue steel only
- Barrel can be heavy or tapered
- Adjustable or fixed sights
- Magazine button is on right side of magazine
- No last shot hold open
- Magazine release at heel of grip
Later Mark I
- Blue steel only
- Barrel can be heavy or tapered
- Adjustable or fixed sights
- Magazine button is on left side of magazine
- No last shot hold open
- Magazine release at heel of grip
Mark II™
- Blue or stainless steel
- Barrel can be heavy or tapered with a variety of lengths
- Fixed or adjustable sights
- Magazine release at heel of grip
- Last shot hold open
- Bolt release lever on left side of grip frame
- Some later models were drilled and tapped for optic mounts
Mark II™22/45™
(Photo coming soon)
- Blue or stainless steel
- Barrel can be heavy or tapered with a variety of lengths
- Fixed or adjustable sights
- Button style magazine release on left side of grip frame
- Last shot hold open
- Bolt release lever on left side of grip frame – must be manually disengaged, no sling shot loading
- Polymer grip frame, black color only, with non-replaceable and non-removable molded in grip panels
Mark III™
- Blue or stainless steel
- Barrel can be heavy or tapered with a variety of lengths
- Fixed or adjustable sights
- Button style magazine release on left side of grip frame
- Last shot hold open
- Bolt release lever on left side of grip frame
- Loaded chamber indicator on left side of upper receiver
- Magazine disconnect- gun will not fire without a magazine in place
- Drilled and tapped for optic mount
Mark III™22/45™ (Non-RP)
- Blue or stainless steel
- Barrel can be heavy or tapered with a variety of lengths
- Fixed or adjustable sights
- Button style magazine release on left side of grip frame
- Last shot hold open
- Bolt release lever on left side of grip frame – must be manually disengaged, no sling shot loading
- Loaded chamber indicator on left side of upper receiver
- Magazine disconnect- gun will not fire without a magazine in place
- Drilled and tapped for optic mount
- Polymer grip frame, black color only, with non-replaceable and non-removable molded in grip panels
Mark III™22/45™ RP
- Blue or stainless steel
- Barrel can be heavy or tapered with a variety of lengths
- Fixed or adjustable sights
- Button style magazine release on left side of grip frame
- Last shot hold open
- Bolt release lever on left side of grip frame – must be manually disengaged, no sling shot loading
- Loaded chamber indicator on left side of upper receiver
- Magazine disconnect- gun will not fire without a magazine in place
- Drilled and tapped for optic mount
- Polymer grip frame with replaceable grip panels
Mark III™22/45™ Lite RP
- Monolithic upper receiver and barrel, all one diameter 4 1/2″ barrel length
- Threaded barrel
- Adjustable sights only
- Button style magazine release on left side of grip frame
- Last shot hold open
- Bolt release lever on left side of grip frame – must be manually disengaged, no sling shot loading
- Loaded chamber indicator on left side of upper receiver
- Magazine disconnect- gun will not fire without a magazine in place
- Drilled and tapped for optic mount
- Polymer grip frame with replaceable grip panels
- Variety of colors and machining patterns on barrel
Mark IV™ Metallic Frame
- New, push-button style take-down
- Stainless steel or blue with aluminum grip frame
- Barrel can be heavy or tapered with a variety of lengths
- Fixed or adjustable sights
- Button style magazine release on left side of grip frame
- Last shot hold open
- Bolt release lever on left side of grip frame
- Magazine disconnect- gun will not fire without a magazine in place
- Drilled and tapped for optic mount
Mark IV™22/45™
- New, push-button style take-down
- Blue steel barrel with polymer grip frame
- Replaceable grip panels
- Adjustable sights only
- Button style magazine release on left side of grip frame
- Last shot hold open
- Bolt release lever on left side of grip frame
- Magazine disconnect- gun will not fire without a magazine in place
- Drilled and tapped for optic mount
Mark IV™22/45™ Lite
- Monolithic upper receiver and barrel, all one diameter 4 1/2″ barrel length
- Threaded barrel, New York version – with non-threaded barrel is available
- New, push-button style take-down
- Polymer grip frame with replaceable grip panels
- Adjustable sights only
- Button style magazine release on left side of grip frame
- Last shot hold open
- Bolt release lever on left side of grip frame
- Magazine disconnect- gun will not fire without a magazine in place
- Drilled and tapped for optic mount
- Variety of colors and machining patterns on barrel
