Description
If you own a full-size Springfield XD 9 or 40, this Advantage Arms conversion gives you a practical way to shoot more while spending less. Swapping out the slide for the included .22 LR upper takes about 30 seconds and requires zero modifications to your frame. You get all the same controls, trigger, and handling you'd use with your centerfire XD, so your training directly carries over when you pick up the 9mm or 40 again.
What Makes This XD Conversion Kit Different
Advantage Arms designed this kit to be their most accurate XD option, with a precisely manufactured 4.49-inch barrel made from heat-treated 416 stainless steel. The slide itself is aluminum with a steel insert at the breech face to handle rimfire pressures reliably. You'll find adjustable sights already installed, so you can dial in your preferred zero without additional parts. One advantage of this kit over some competitors is the last-round lock-open feature, though Advantage Arms notes this may be inconsistent due to XD spring geometry.
Range Reliability and What to Expect
Like most rimfire conversion kits, this one works best with quality ammunition like CCI Mini-Mags or Federal AutoMatch. Avoid budget bulk packs and hollowpoints, since the magazines and chamber are optimized for standard velocity round-nose loads. The included 10-round magazine is polymer construction and feeds reliably once you've run a few dozen rounds through it. Users report solid accuracy out of the box, though you'll want to shoot it before relying on it for anything critical. The internal firing pin safety matches what Springfield incorporated into their centerfire XDs, so drop safety is built in.
What's In the Box
You get the complete .22 LR slide assembly, one 10-round magazine, a soft range bag for storage and transport, and that's really all you need to get started. There's no manual included, but Advantage Arms recommends checking their website for the recommended ammunition list and any quick setup tips.
Key Specifications
- Caliber: .22 LR
- Barrel Length: 4.49 inches
- Magazine Capacity: 10 rounds
- Fits: Springfield XD 9/40 non-XDM frames only
- Does Not Fit: 3-inch sub-compact models
- Finish: Black anodized aluminum slide with stainless steel barrel
- Sights: Adjustable
- Installation: Tool-free, approximately 30 seconds
- Barrel Material: Heat-treated 416 stainless steel
- Slide Material: Anodized aluminum with steel breech face insert
- Safety Features: Internal firing pin safety
- Manufacturer: Advantage Arms
- Manufacturer Part Number: XD940-4
- UPC: 094308002200
What’s Included
- Complete .22 LR slide assembly with barrel
- One 10-round magazine
- Soft padded range bag
- Adjustable rear sight
- Front sight
Frequently Asked Questions
How does the XD940-4 conversion kit installation work?
You simply remove your XD's slide by pressing out the takedown lever, then slide the .22 LR assembly onto your frame and secure it the same way. No gunsmithing or modifications needed. The whole process takes less than a minute once you've done it once.
What ammunition works best in this conversion kit?
Federal AutoMatch, CCI Mini-Mags (40-grain solid point), and similar standard velocity round-nose loads work reliably. Avoid hollowpoints and ultra-cheap bulk ammunition. Advantage Arms includes a recommended ammunition list with the kit, so check that before shooting to ensure the best reliability.
Will my XD centerfire magazines fit this conversion kit?
No. The .22 LR kit comes with its own 10-round magazine designed specifically for rimfire. You'll use this magazine whenever you swap to the .22 assembly, then switch back to your standard magazines when you return to centerfire.
How accurate is the Advantage Arms XD conversion kit?
Advantage Arms calls this their most accurate XD option, and real-world testing shows it shoots clean groups at typical range distances. It won't match a dedicated target .22, but it's more than adequate for training fundamentals and practicing trigger control without burning through expensive centerfire ammunition.






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