The new model Taurus 24/7 OSS is the logical outgrowth of Taurus USA’s well-accepted Model 24/7 with input from the Taurus Model 100. The OSS is not just a long slide version. The trigger system is new; the decocking and safety setup that I first encountered with the Taurus Model 100 has been re-engineered and the magazine catch is now reversible. The OSS (this acronym does not represent anything by the way) is a very much upgraded and revised Model 24/7. This is not to denigrate the 24/7 pistol, of course, for it speaks to the needs of a particular market segment. Actually, the OSS is larger, making it a bit harder to conceal and not everyone has any interest in owning a pistol that offers both single or double action firing for the first shot.
Before getting into specifics, the OSS is a combination of steel, polymer and aluminum. The steel slide assembly rides on an aluminum insert, which is contained in a polymer shell. The OSS is chambered in 9mm, .40 and .45ACP. The steel slide has Novak three-dot sights dovetailed front and rear and thus are windage adjustable. Its diagonal front and rear grasping grooves, with four up front and six to the rear, enhance slide manipulation.
A large extractor, which also holds the loaded chamber indicator, is at the right rear of the ejection port window. The loaded indicator, a flat metal insert, is sandwiched in the body of the extractor. When a round or cartridge case is chambered, the cartridge case rim moves this insert outward, where it can be seen (and is painted red to help) or felt. Looking inside the slide, you can see the passive firing pin lock at the rear and on the same side as the extractor/loaded chamber indicator. This can only be released by a full pull of the trigger.
This sample, in 9mm, holds 17 rounds in an all-metal magazine (there are 15 rounds in .40 and 12 in .45ACP). The base plate is removable and shaped to add to the gripping area. The magazine is removed by pressing inward on the horizontally grooved magazine release catch, which is at the bottom and to the rear of the triggerguard on the left side of the frame. The catch now is reversible. In construction, this part is controlled internally by a long wire spring in the forward face of the magazine well.
On the frame, the front strap has two finger swells and the front and backstraps have a grenade-type pattern of raised surfaces. The sides of the frame and the top portion of the backstrap are finely pebbled. The round trigger is smooth faced and its trigger pull weighed in at 6.5 pounds single-action (SA) and 7.5 pounds double-action (DA).
Forward, above the triggerguard, are two dished-out areas, one on each side, where an operator can place his trigger finger. The triggerguard has a forward recurve shape favored by those who like to hook their off-hand forefinger around it while using a two-hand hold. The triggerguard opening is also large enough so that a reasonably gloved finger can still operate the trigger. A light/accessory rail is part of the dust cover and, as was my experience with previous 24/7 models, the rails easily accepted an Insight Tech-Gear light as well as other type of brands.
The OSS continues to have a drop and striker safety, both of which are only disabled when the trigger is pulled completely to the rear. The frame proper of the OSS is the aluminum body, which is inside the polymer shell and held with two crosspins. The back of this frame bears the gun’s serial number, as do the barrel and slide.
Within the frame is contained the novel trigger system which is explained well in the owner’s manual. Taurus USA states, on page eleven, “…has a striker firing mechanism. It normally (emphasis added) operates as a conventional Single-Action system… if an ammunition failure occurs and a misfire happens, the system automatically goes to a double-action condition, allowing you to fire again by pulling the trigger double-action…”
Well, this is correct but as late night commercials often blare, there’s more. Let’s start at where you have chambered a round. At this point you can apply the manual safety, which then has the gun in SA mode. (The striker status is indicated by the rectangular red tip of the cocking indicator now visible and flush to the back of the rear of the slide.) If instead of this you want to have the first shot be fired double action, pushing the manual safety further upward decocks the striker from single action to double action. The striker moves forward, where it is captured by the forward and DA sear. The manual safety can, if so desired, be reapplied.
The gun then is fired by a long trigger press with this action moving the striker fully rearward and then releasing it. The striker does not get caught by the SA sear, as the front sear pushes against it and cams it out of the way.
Also, as noted on page 17 of the manual, after firing a round, you can either hold the trigger to the rear or allow it to run forward when applying the manual safety. If the safety is applied with the trigger rearward, you cannot then use the safety’s decocking function. As mentioned earlier, I first encountered the dual-function safety and decocking action on the Taurus Model 100, but it worked in reverse. You have to push downward to decock. The new version works better for me as I ride my thumb, out of 1911 habit, on frame-mounted thumb safeties and was inadvertently decocking while firing.
The OSS offers the option of DA or SA first shot as well as the ability to decock the gun, returning it to double-action for the next shot at any time in the firing cycle. I see a few advantages to this system, such as wanting the efficacy of a cocked-and-locked carry for holster wear, but wanting a double-action pull for places you are uncomfortable with a gun so configured.
I had two range sessions, the first for function and accuracy with the OSS 9, giving me a 2-inch four-shot group with one flyer out to 3 inches at 20 yards using Black Hills 115-grain JHP. The second range visit was to shoot the Lower Providence Rod & Gun Club’s monthly IDPA match. I managed to find a DeSantis belt slide holster that would hold the gun without a light along with a DeSantis and a Blade-Tech holster that worked if a light was mounted. A BlackHawk magazine pouch handled the OSS magazine. I went with the belt slide since, with the light on, the gun was too loose a fit in the latter two holsters and you can’t use lights on guns in IDPA matches.
I found I like the longer slide and barrel of the OSS for such activity, as the gun’s feel is much like that of my 1911 or the long-slide Glock 34 and 35. Reloading the OSS is fast even for me, what with the wide magazine well for the OSS high-capacity magazines. I began some stages with the gun in SA and others in SA mode.
The only difference was I was at first not comfortable with the long DA trigger stroke and so pulled a few shots out of the center hit zone. I then shot two stages back to back in this latter trigger mode and had no problem, so for me the OSS was a quick study.
The Taurus 24/7 OSS comes with one spare magazine two key locks and a bristle-brush cleaning rod in a hard-sided and lockable case. I understand the .45ACP version also has a magazine loader included.