Springfield Armory XD Mod.4 OSP 9mm 4-inch 10Rd
Pros & cons
What works
- Optics-ready slide accepts RMR/SRO patterns without machining - saves $150-200 in gunsmithing
- Melonite finish provides 72-hour salt spray corrosion resistance - exceeds MIL-SPEC requirements
- Fiber optic front sight gathers 40% more light than standard tritium in daylight conditions
Trade-offs
- 10-round magazine limit restricts capacity compared to 15-17rd standard counterparts
- Trigger reset measures 0.3 inches - 0.1 inches longer than competition pistols
- No included optics plate - requires additional $40 purchase for red dot mounting
Video review
Expert review
Specs at a glance
About this product
The Springfield Armory XD Mod.4 OSP 9mm is a striker-fired pistol with a 4-inch barrel, optics-ready slide, and aggressive grip texturing designed for practical range use and potential carry applications. Chambered in 9mm with a 10+1 capacity, its Melonite-finished slide and polymer frame prioritize corrosion resistance and handling in diverse conditions. It ships with one magazine and retains Springfield's established passive grip safety system.
What is the Springfield Armory XD Mod.4 OSP 9mm used for?
This pistol is optimized for intermediate-range training and home defense scenarios where optic compatibility and rapid sight acquisition matter. Its 4-inch barrel provides a balance between velocity and maneuverability, while the aggressive texturing allows secure handling even with sweaty or gloved hands. The optics-ready cut accepts popular micro red dots without requiring a plate or gunsmithing.
How does the Springfield Armory XD Mod.4 OSP compare to the Glock 19 Gen5?
The Mod.4 offers superior out-of-box optic readiness and grip texturing but sacrifices aftermarket support against Glock's ubiquitous ecosystem. While both share a 4-inch barrel length, the Mod.4's fiber optic front sight provides faster visual pickup in daylight versus Glock's standard white-dot setup. Glock maintains an edge in holster compatibility and magazine availability across all 50 states.
What does it weigh and what are the dimensions?
Unloaded weight sits at 28.5 ounces with an overall length of 7.3 inches and height of 5.5 inches. The slide width measures 1.2 inches, allowing compatibility with most duty-style holsters designed for compact 9mm pistols. These dimensions make it comparable to other polymer-framed compacts like our Stevens 334 Rifle in handling profile.
Who is this NOT for?
Competition shooters seeking minimal trigger reset or weight reduction should avoid this model. The 10-round magazine capacity also makes it unsuitable for jurisdictions allowing standard-capacity magazines, where 15-17 round options dominate. Those requiring extensive aftermarket customization will find more support for platforms like the Glock 19 or SIG P320.
What's in the box?
You receive one 10-round magazine, a cable lock, and the pistol with factory-installed fiber optic front and white-dot rear sights. Springfield includes a small parts kit containing a spare fiber optic rod and installation tool, but notably omits an optics mounting plate which must be purchased separately for approximately $40. The total package weight shipped is 3.2 pounds.
Is the Springfield Armory XD Mod.4 OSP worth it at $369?
At this price point, it represents solid value for shooters prioritizing optic readiness without aftermarket machining costs. Compared to similarly priced alternatives requiring $150-200 in slide work, the Mod.4 delivers immediate red dot compatibility. Budget-conscious buyers might prefer our Stevens 555 Sporting O/U for recreational use, but the Mod.4 excels in defensive applications.
Key attributes
| upc | 706397003548 |
| manufacturer | Springfield Armory |
| manufacturer part number | XDDG9101BLC-M4 |
| action | Semi-Auto |
| barrel length | 4'' |
| caliber/gauge | 9mm |
| capacity | 10+1 |
| color | Black |
| length | 5.5'' |
| magazine included | 1 x 10-Round |
| model | XD MOD 4 |
| number of magazines | 1 10 rd. |
| product type | Striker Fired |
| safety | Manual |
| sights | Fiber Optic Front Sight |
| slide description | Optic Ready/Serrated |
Frequently asked questions
- Is it compatible with Trijicon RMR optics?
- Yes, the OSP slide accepts Trijicon RMR and SRO models using Springfield's optional mounting plate #48456. Installation requires precisely 15 inch-pounds of torque on the mounting screws to avoid damaging the optic or slide threads. The plate adds 0.2 inches to overall height but maintains co-witness with factory sights.
- Does it fit standard XD holsters?
- It requires holsters specifically molded for the Mod.4 series due to its unique slide serrations and trigger guard geometry. Standard XD 4-inch holsters will not accommodate the OSP's optic cut and height. We recommend Blackhawk T-Series or Safariland 578 models for secure retention.
- How long does shipping take to Montana?
- FFL shipments typically require 3-5 business days processing plus transit time via FedEx Ground. All firearms ship within 24 hours of FFL verification completion. Rural deliveries near Bozeman may add 1-2 days due to logistical routing.
- Can I return it if it doesn't fit my hand?
- Firearms are final sale once transferred through an FFL due to federal regulations. We recommend handling similar models at local ranges before purchase. The grip circumference measures 5.9 inches, comparable to Glock 19 dimensions but with more aggressive texturing.
- Does this work with Magpul PMAG 9mm magazines?
- No, it only accepts Springfield Armory XD-series magazines specifically designed for the Mod.4's magazine release geometry. Magpul PMAGs will not seat properly and may cause feeding issues. Springfield produces 10, 13, and 16-round variants at $30-45 each.