Description

Ruger SP101 357 Mag 2″ Barrel Stainless Steel 5-Shot

Ruger SP101 357 Mag 2″ Barrel Stainless Steel 5-Shot

The Sturm, Ruger & Co. SP101 KSP321XL-C is a compact, five-shot stainless-steel double-action revolver chambered for .357 Magnum and also capable of firing .38 Special and .38 Special +P ammunition. Ruger documentation identifies the closely related KSP-321XL as a 2¼-inch-barrel, spurless-hammer SP101 with Crimson Trace Lasergrips.

Specifications

Ruger’s period documentation specifically describes the KSP-321XL as a five-shot stainless-steel .357 Magnum, with a 2¼-inch barrel, fixed sights and a spurless hammer.

What the “-C” designation means

The important distinction is the Crimson Trace Lasergrips package.

Ruger introduced the KSP-321X and KSP-321XL with factory-installed Crimson Trace Lasergrips. The XL version uses the spurless hammer, while the standard X version has a conventional exposed hammer. The laser has a pressure activation switch integrated into the grip and a master on/off switch on the bottom.

The laser is adjustable for windage and elevation, with adjustment made using the supplied Allen wrench.

SP101 construction

The SP101 is substantially more heavily built than an ultralight snub-nose revolver. The stainless-steel construction gives it considerable mass for its size, which is particularly relevant with .357 Magnum ammunition.

Ruger uses a triple-locking cylinder that secures the cylinder at the front, rear and bottom. Ruger describes this arrangement as contributing to durability and reliability.

The revolver also uses a transfer-bar safety mechanism, which is designed to prevent the hammer from directly striking the firing pin unless the trigger is properly operated.

Spurless hammer

The XL’s spurless hammer is one of its defining characteristics.

Instead of having an exposed hammer spur that can catch on clothing or equipment, the hammer is enclosed within the rear profile of the frame.

The trade-off is that this configuration is intended primarily around double-action operation rather than giving the shooter the conventional exposed-hammer single-action capability of other SP101 variants.

.357 Magnum and .38 Special compatibility

One useful characteristic of this revolver is its ability to accept:

• .357 Magnum

• .38 Special

• .38 Special +P

Ruger explicitly identifies all three as compatible with the KSP-321XL.

The longer .357 Magnum chamber also allows .38 Special ammunition to be used, although ammunition selection should always follow the current Ruger manual and the markings on the particular revolver.

Barrel length

There’s an important detail when comparing listings.

The KSP321XL series is generally described by Ruger as having a 2¼-inch barrel, rather than exactly 2.00 inches.

So if a dealer listing says “2-inch barrel”, it may be using “2-inch” as a rounded marketing description. For identification purposes, the Ruger specification of 2.25 inches is the more precise figure.

Fixed sights

The KSP321XL uses:

• Integral/fixed rear sight

• Fixed/ramped front sight

This is a straightforward sight arrangement appropriate to the compact SP101 configuration.

Because the sights are fixed, point-of-impact changes aren’t accomplished through a conventional adjustable rear sight. Ammunition choice can nevertheless affect point of impact.

Crimson Trace laser

The factory laser-grip package is particularly significant for this model.

The laser uses a front-of-grip pressure activation switch, allowing either right- or left-handed activation. A separate master switch at the bottom allows the laser to be disabled.

The original Ruger announcement described the laser as adjustable for both windage and elevation.

Because this is an older/special-configuration model, the condition of the laser module and availability of its batteries can matter considerably when evaluating a used example.

Weight and recoil

Ruger’s SP101 platform is intentionally heavier than lightweight revolvers. A period Ruger description of another 2.25-inch SP101 configuration gives a weight around 26 ounces, and the platform’s stainless construction contributes substantially to that weight.

That mass is useful with .357 Magnum because the cartridge produces substantial recoil in a small revolver. The same revolver can therefore feel markedly different with .38 Special ammunition. Ruger SP101 357 Mag 2″ Barrel Stainless Steel 5-Shot

Model identification

For a gun advertised specifically as “Ruger SP101 .357 Mag 2″ Barrel Stainless Steel 5-Shot KSP321XL-C,” I’d look for these identifying characteristics:

1. SP101 marked on the frame.

2. .357 Magnum chambering.

3. Five-shot cylinder.

4. Stainless-steel construction.

5. Approximately 2¼-inch barrel.

6. Spurless hammer.

7. Fixed sights.

8. Crimson Trace Lasergrip.

9. Model designation consistent with KSP-321XL/KSP321XL-C.

The combination of five-shot cylinder + 2¼-inch barrel + spurless hammer + factory Crimson Trace Lasergrips is particularly useful for distinguishing this configuration from other SP101 variants.

KSP321XL vs. KSP321XL-C

One caution when researching this particular model: Ruger’s historical documentation uses KSP-321XL for the spurless-hammer Crimson Trace configuration, while some dealer/catalog listings append “-C” to the model designation. Ruger SP101 357 Mag 2″ Barrel Stainless Steel 5-Shot

Therefore, if you’re buying a used example, I’d verify the actual serial-number/model markings and factory configuration, rather than relying solely on a retailer’s SKU.

Historical status

This appears to be a special/older configuration rather than simply the current standard SP101 catalog model. Ruger announced the Crimson Trace-equipped KSP-321X/KSP-321XL models in 2007.

That can make an original, complete example—particularly one retaining the factory Crimson Trace grip, original packaging and documentation—different from a modern SP101 with an aftermarket laser grip. Ruger SP101 357 Mag 2″ Barrel Stainless Steel 5-Shot

Safety/maintenance

For this revolver, the Ruger instruction manual for the applicable SP101 configuration is the authoritative source for loading, unloading, inspection, maintenance and safe handling. Ruger emphasizes that its firearm manuals contain important safety warnings.

If you’re evaluating a used KSP321XL-C, I’d pay particular attention to the cylinder lockup, timing, bore/chambers, forcing cone, barrel/cylinder gap, grips/laser condition, and overall mechanical condition, and have a qualified gunsmith inspect any questionable example.