Handguns > Exploded View

Ruger Security-Six

The Security-Six is well made and finished throughout, and its design shows considerable ingenuity.


The Ruger Security-Six double-action revolver is the result of imaginative designing and modern production techniques. this solid-frame handgun with side-swing cylinder and simultaneous ejection was introduced in 1970. It is offered in .38 Spl. and .357 Mag. chamberings and with choice of fixed or adjustable target-style sights.

Trim, compact, and strong, this six-shot revolver with four-in. barrel weighs 33 ounces unloaded and measures 9 ¼-inches long overall. It is also available with 2 ¾- and six-inch barrels. To quote the manufacturer: “It is a handsome, rugged holster revolver—compact in the overall, yet massive enough to properly be designated as a heavy duty revolver for the rigors of police and military service.”

Among several desirable features of the Security-Six is that it can be disassembled easily for cleaning and lubrication without use of special tools. After turning out the grip screw with a cartridge rim, coin, or screwdriver, the grips, lockwork, and cylinder assembly can be removed. Except for windage and elevation adjustment screws in the rear sight of the target version, the only screw in this revolver is the grip screw.

Unlike most other handguns, the frame, crane, hammer, trigger, trigger guard and several smaller parts of the Security-Six are produced from chrome-molybdenum steel investment castings. The barrel is a machined forging and the cylinder, which rotates to the left, is machined from bar stock. All springs are of durable coil type. The frame is not fitted with a sideplate as in many other revolvers. This aids strength.

Integral with the barrel are an ejector rod housing and a raised grooved barrel rib. Pinned to the front of the rib is a Baughman-style quick-draw front sight.

In pleasing contrast with the blued finish of the other metal parts, sides of the hammer and trigger are polished bright. The grips are oil-finished American walnut, each fitted with a smaller circular Ruger medallion of white metal. Cut checkering in a diamond-shaped area on the grips is nicely executed.

An excellent safety feature of this revolver is the system of transmitting the hammer blow to the spring-loaded firing pin by means of a transfer bar. The hammer nose rests on the frame, and the transfer bar does not align with the firing pin until the trigger is fully to the rear. This prevents accidental firings should the gun be dropped with the hammer down, or should the hammer be struck when down and with the trigger forward.

Another excellent safety feature is that the hammer cannot be cocked when the cylinder has been swung out, and the cylinder cannot be opened when the hammer is cocked. The cylinder assembly is released to swing out to the left by depressing the cylinder release button in the left recoil shield of the frame.

Handling and pointing qualities of this well-made reliable revolver are excellent, and its overall precision is very good. Its double-action trigger pull is satisfactorily smooth, without excessive buildup of resistance when the trigger pressure is increased. The single-action pull weighs approximately three pounds, and has very little creep.

The Security-Six is well made and finished throughout, and its design shows considerable ingenuity.

Disassembly Instructions

1. Determine that revolver is unloaded before attempting disassembly. Unscrew grip screw (48) with coin or cartridge rim, and remove grips (42) (47). Cock hammer (24) with thumb. Insert disassembly pin (43), stored in left grip, through hole at bottom of hammer strut (19). Pull trigger, lower hammer with thumb, and remove mainspring/hammer strut assembly from grip frame.

2. Pull trigger fully to rear and remove hammer pivot assembly (20). Keeping trigger fully depressed, roll hammer forward and lift straight upward from frame.

3. Working through frame opening, depress trigger guard plunger (60) with punch. Pull rear of trigger guard (57) downward and remove from frame. In the field, trigger guard plunger may be depressed by rounded head of hammer strut.

4. With the gun on its right side, press crane latch (37) and open cylinder (34). Draw cylinder/crane assembly forward and out of frame. Remove cylinder latch (38).

5. If cylinder/crane assembly must be taken down, clamp knurled head of ejector rod (25) between wood blocks in vise or locking jaw pliers. Insert empty cartridge cases in opposite chambers and unscrew cylinder, turning clockwise. (Assembly is secured with left-hand threads.) When cylinder is fully unscrewed, squeeze crane (28) and cylinder together and remove from ejector rod. All parts may then be separated.

To reassemble cylinder/crane assembly, replace cylinder latch spring and plunger (29) (30) within crane pivot. Insert ejector rod washer (31) and ejector spring (32) within cylinder axle, making sure that the washer seats squarely upon its shoulder. Assemble ejector (39), cylinder, and crane. Slide center pin spring (26) over center pin rod (27) and insert through threaded end of ejector rod. Holding cylinder/crane assembly, turning ejector rod counter-clockwise to start its thread. Tighten in vise, as before.

6. Assemble rest of gun in reverse order. When installing trigger guard assembly, locate transfer bar (49) and pawl (56) ahead of their internal frame shoulders, and enter lug at front of guard within its frame seat. Pivot assembly upward into contact with frame. Determine that transfer bar is situated to rear of internal crossbar of frame latch, and snap guard home. Pulling trigger will cycle cylinder, if assembly is correct. When replacing mainspring assembly, position mainspring seat (45) with offset hammer strut hole to rear.

7. Cutaway indicates relationship between assembled parts. Gun is shown unloaded, with all springs at rest. Crane latch has been omitted for clarity; its crossbar would lie between center pin lock and transfer bar. Parts are number keyed to parts legend.

Ruger Security Six Exploded View Diagram

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25 Responses to Ruger Security-Six

John Roberts wrote:
August 07, 2014

The Ruger Security-Six is one of the most durable handguns ever designed. Yet its modest wooden panels, gritty out-of-the-box

Stetson wrote:
March 24, 2013

I purchased mine in 1983 It's stainless 4 inch barrel.I've put several hundred rounds through it and it's still like new. I dry fired it enough so I can feel when the trigger ready to break.I wish ruger would bring them back as you see security officers with gp-100's .I hate the wooden grips so I put rubber grips on ir and it's like a different revolver.

WaterPilot wrote:
March 20, 2013

I bought a 1986 Security Six in college and kept it for 14 years. I got a divorce and sold it to a friend in 2000.My friend got a divorce from his wif a few weeks ago and I bought my SS back (he got more than I sold it to him for) but everything was cool, glad to help, he needed the money...I bought it back. I place this gun with my S&W 686 Plus all day long. It will never die or be abused anymore. God bless the USA

Bill wrote:
March 16, 2013

I bought mine 3 years ago. The double action makes the accuracy for me. A center mass shot every time a 40 yards. And clean up's a breeze.

Ron wrote:
February 02, 2013

I bought my Security-Six in 1972, Serial Number 150-5000, while living in Alaska. I've fired about 12 to 15 rounds through it. I LOVE this pistol. It trigger mechanism is smooth, adjustable sights are quite beneficial and it just feels good.

T Gold wrote:
June 17, 2012

I have 3 security sixes in each barrel length. A speed six in .357. Also a service six in .357 with heavy barrel and one in .38 in light. Bbl trim. All are stainless and as new in box.

ash wrote:
June 13, 2012

Best revolver ever made.

Tiff Digger wrote:
April 21, 2012

I own a blued Six with a 6' barrel and molded grips. Smooth shooting, accurate revolver. A real pleasure to shoot. It's not real practical as a carry gun, but it's a real blast to

James Palmer wrote:
February 26, 2012

My Service six .357 Mag cylinder freezes up after 12 rounds or so. Whats wrong here?

DJH wrote:
February 16, 2012

I received my 4 inch Stainless Security Six when I turned 21 in 1977. It has and will remain one of my all time favorite handguns. With Pachmyer grips it is accurate and very comfortable to shoot.

Michael wrote:
January 09, 2012

I recently found a stainless steel Security Six in excellent condition for a fair price. I originally had one back in 1971 in blue when I was a Patrolman for a small Town PD. It was a great gun then and a great gun now. I wish Ruger would bring back the 2 3/4 in. models.

Loomis wrote:
November 29, 2011

I just recently picked up a 4' blued SS, just like my first real revolver of 25 years ago. Can't wait to revisit an old friend. They are truly competent service weapons and rugged as hell.

OCCD wrote:
November 23, 2011

My ruger was great except when firing the reloads provided by my dept.. The powder residue build up caused the cylinder to bind and the weapon wouldn't fire. The tolerances were so close that the problem had to be solved by running a file over the face of the cylinder and muzzle cone. With good ammo I never had this problem.

Chuck S wrote:
November 08, 2011

I have a total of 6 Security Sixes. 3 blued and 3 stainless steel. All with 4" barrels except one SS with 2.75" barrel. Can't say which one I like the most. Love them all. They are built like tanks, more accurate than any revolvers I've ever owned or shot, super easy to disassemble/reassemble. All have Pachmayer grips except the SS 2.75" hag Hogue. They love full 357 rounds. If you want a real blast try some "Buffalo Bore" 357 ammo. Hold on tight and be prepared for muzzle flip. Buffalo Bore ammo is loaded to maximun SAMMI specs. Note: for personal defense I would not shoot 357 inside my house - may blow out an eardrum. For PD in house I load up with 38special +P not as loud as 357 but ballistics close to 357 mag. However, for travel and carry 357mag all the time.

lranger wrote:
September 04, 2011

I had one many years ago - 2.75 inch barrel, .357. It was a righteous flame thrower with the right ammo. It really let you know when you touched one off. 150 rounds of Blazer .357 will leave your hand bleeding - or so I have heard from people foolish enough to try it. That was with padded Hogue grips. If you get one, don't try shooting .357 with the standard wood grips. Get some comfortable grips with cushions that can absorb some of the recoil before you shoot .357. But it was a solid weapon and you always knew it would work when you pulled the trigger. Unfortunately, I had to sell mine. They are definitely stoutly built. They are built to take hot loads and last.

TJ Key wrote:
July 20, 2011

RE: Pistol Packing Poppa's question- The security six has been discontinued and replaced by the GP 100. However, you can still find them on the used market. A month ago I bought a blued 4" from a local gun shop for $299.00. It has alot of holster wear, but shoots sweet. I have seen them at gunshows in the $350.-450. range. Like all Ruger revolvers, they are built hell for stout, and this one shoots as well as my 6" Security Six. Hope this helps.

Greg wrote:
July 19, 2011

I have one that I have owned over 3 years. I bought it as my first pistol. I think this one was made in 1973 It is very accurate. I have put over 2000 rounds through it and never had a problem. Condition wise I would give it a 9 out of 10. Since then I have obtained 2 more pistols but still consider the "SIX" my favorite.

Pistol Packing Poppa wrote:
July 19, 2011

Is the Security Six still available? If yes, what sku numbers?

Joshua wrote:
April 23, 2011

I have two, one with 2.75" barrel and one with a 4" barrel and they are extremely accurate, smooth and pleasant to shoot. My favorite handguns. I put tritium night sights with white dots in both and they show up great in any light.

Tom wrote:
April 19, 2011

Bought a new 6" Sec. Six in 1976 inscribed with "Made in the 200th year of American Liberty" and before all the ugly warning labels for lawyers and gun dummies. Sweetened it a bit with some trigger group tuning and it's still a favorite of mine. Bought a GP100 to digest full house stuff to save the old Sec Six for pleasure shooting.

Bill wrote:
April 13, 2011

I have the 2 3/4 stainless model. Terrific pistol. I'm a big fan of Ruger pistols. So is my dad - I think he has one of every pistol Ruger has made in the last 35 years - all of them new in the box.

Keith wrote:
April 13, 2011

The "Best" Revolver ever made, in my opinion.

Terry wrote:
April 05, 2011

I have the 1974 4" model. It is the most accurate revolver I have. Being blind in my right eye is not as much of a problem due to the adjustable rear site. I shott the Sec. Six better than my old 6 1/2" BH 3 screw.

Harry wrote:
March 31, 2011

I purchased the SS back in '72, and we keep it as a defense backup tool. I've always liked the style. Some folks don't like the way the cylinder release is designed, but I like it just fine. The load we use is Hydroshock 357.

Don wrote:
March 23, 2011

I've enjoyed the security six sense my youth. I use to walk cans down the road with it. The gun has never failed. Security in the name has multiple meanings. The quality safety features prevented a few injures I'm sure.