Description

The Springfield XD-S Mod 2 OSP 45 ACP is a slim single stack chambered in a cartridge most slim pistols avoid. Nine tenths of an inch wide at the grip, 23 ounces, 6.3 inches long, and a slide milled at the factory for a red dot. It exists for the person who wants a .45 they can conceal properly.
Nine tenths of an inch is the whole point of the Springfield XD-S Mod 2 OSP 45 ACP
Grip width is what determines whether a pistol prints under a shirt, and this frame measures 0.9 inches. That is genuinely slim, and it is what makes a .45 practical to carry inside the waistband where a double stack simply will not hide. The single stack frame is the tradeoff that buys it, and the price is capacity.
Five rounds flush or six in the extended magazine is not much next to a modern double stack, and it is fair to weigh that honestly. What you get in exchange is a .45 caliber projectile in a package smaller than most 9mm compacts, which is a trade a lot of experienced carriers are happy to make.
At 23 ounces the pistol is light for the chambering, which means .45 ACP recoil is noticeable. It is a slow, heavy push rather than a sharp snap, and the low bore axis and the Enhanced Grip Texture on the frame help a great deal, but this is not a gun that shoots itself. Plan on range time.
The Springfield XD-S Mod 2 OSP 45 ACP optic cut and mechanicals
OSP means the forged steel slide leaves the factory milled and finished for a micro red dot rather than needing aftermarket machine work. On a small pistol a dot matters more than on a large one, because a short sight radius magnifies any misalignment between front and rear irons. A dot removes that problem entirely and puts the accuracy back.
The optics ready slide ships with a cover plate installed, so the gun is complete and shootable out of the box if you never mount anything. Behind the cut sit a white dot front and a serrated rear, which is a basic but functional setup. Buyers building a low light gun should plan on a tritium front or the red dot the slide is already cut for.
The barrel is 3.3 inches of hammer forged steel with a Melonite finish and a 1:16 twist. Hammer forging works the steel around a mandrel under enormous pressure, which produces tighter tolerances and longer service life than a conventionally cut barrel. A dual captive recoil spring on a full length guide rod controls slide velocity, which is the central engineering problem in any short, light pistol firing a large cartridge.
Springfield XD-S Mod 2 OSP 45 ACP Specifications
- Caliber: .45 ACP
- Model: XDSG93345BOSP
- Barrel: 3.3 inch hammer forged barrel, Melonite finish, 1:16 twist
- Slide: Forged steel, Melonite finish, optics ready slide
- Frame: Black polymer with Enhanced Grip Texture, single stack frame
- Sights: White dot front, serrated rear
- Recoil system: Dual captive recoil spring with full length guide rod
- Magazines: One 5 round flush and one 6 round extended
- Weight: 23 ounces with flush magazine
- Overall length: 6.3 inches
- Height: 4.4 inches flush, 5 inches with extended magazine
- Grip width: 0.9 inches
- Finish: Black Melonite
- Cover plate fitted over the optic cut
- Grip safety fitted
Two magazines ship with the pistol, one flush for concealment and one extended for a full grip. Most owners carry the flush magazine in the gun and the extended one as a spare, which gives you a longer hold on the reload.
Why Buyers Choose The Springfield XD-S Mod 2 OSP 45 ACP
There are very few slim single stack .45s still in production, and fewer still with a factory optic cut. If you want the cartridge and you want to conceal it properly, the field is small and this sits at the front of it.
The factory optic cut removes a real cost. Aftermarket slide milling runs a couple hundred dollars plus weeks of downtime and cuts through the existing finish, while a factory cut is machined before the coating goes on. On a small carry gun that lives against a body, finish integrity matters.
The XD-S has been in production long enough that holsters, magazines and parts are all easy to find and inexpensive. For a carry gun that support matters more than people expect, because a pistol without a good holster ends up in a drawer.
The honest limitations: five rounds flush is low capacity by any modern standard, and you should be clear eyed about that. A 23 ounce .45 recoils firmly and demands practice. The extended magazine adds grip but also height, which is what prints. And a white dot front is a daylight sight, so a low light setup needs tritium or a red dot.
Who Should Buy The Springfield XD-S Mod 2 OSP 45 ACP
This suits the carrier who specifically wants .45 ACP and needs it to disappear under normal clothing, and anyone who values a slim grip over capacity. Pocket carry in a proper holster, ankle carry and deep concealment all work in a way a double stack cannot match. It is also a sensible backup gun for someone who already carries a full size .
45. Buyers who want capacity should look at a double stack 9mm such as the Hellcat Pro, new shooters should be honest about recoil in a light .45, and anyone building a low light defensive gun should budget for a dot or tritium sights.
What the distributor record confirms about the Springfield XD-S Mod 2 OSP 45 ACP
- Caliber: 45 ACP
- Capacity: 5+1 and 6+1 — both a 5-round flush magazine and a 6-round extended magazine come in the box
- Barrel: 3.30 in., black Melonite steel
- Slide: optic ready, serrated, black Melonite
- Optic footprint: Shield / RMSc
- Sights: fixed
- Frame: black polymer with a Picatinny rail, textured grip
- Weight: 23 oz
- Manufacturer part number: XDSG93345BOSP. UPC: 706397950743
- No sale to California or the US Virgin Islands
Before you order a Springfield XD-S Mod 2 OSP 45 ACP
The slide cut on a Springfield XD-S Mod 2 OSP 45 ACP is the Shield / RMSc pattern, which means a small-footprint optic. Do not buy a full-size RMR for it. A Holosun HS507K X2 is the right size and the right footprint, and on a pistol with fixed iron sights and a 3.3 inch sight radius a dot is the single biggest accuracy upgrade available.
Feed the Springfield XD-S Mod 2 OSP 45 ACP properly. Magtech 45 ACP 230gr FMJ and Sellier & Bellot 230gr FMJ are what we hold in real depth, and Norma RT 230gr is the other option. A 23-ounce .45 recoils. That is the honest cost of a single-stack 45 the size of a Springfield XD-S Mod 2 OSP 45 ACP, and it is why the six-round extended magazine is worth carrying — the extra grip length does more for control than any amount of practice with the flush magazine will.
If .45 is more than you want to manage in a pistol this light, the Hellcat Pro OSP in 9mm is the obvious alternative and holds far more.
Chamber and pressure standards for 45 ACP are published by the Sporting Arms and Ammunition Manufacturers Institute; the factory page is at Springfield Armory.







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