Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and accessories. The Grand Power P40 DA/SA 10mm Pistol with Decocker is a robust, full-size DA/SA 10mm pistol featuring a rotating barrel system for reduced recoil. Its decocker offers an extra layer of safety for carry. Available now for $499.00.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What are the specifications of the Grand Power P40 DA/SA 10mm?
| Product Type | Semi-automatic Pistol |
|---|---|
| Material | Steel slide, polymer frame |
| Manufacturing | Grand Power, Slovakia |
| Finish | Black nitride slide, black polymer frame |
| Hardness/Quality | Robust construction for 10mm cartridge pressures |
| Compatibility | Standard 10mm ammunition, Grand Power P40 magazines |
| Installation/Usage | DA/SA operation with decocker, rotating barrel system |
| Weight | Approximately 29.6 oz (unloaded) |
| Dimensions | Overall Length: 8.0 inches; Barrel Length: 4.25 inches |
| Country of Origin | Slovakia |
| Condition | New |
| SKU | GPP40DASA |
| Caliber | 10mm Auto |
| Capacity | 15+1 rounds |
| Sights | Steel front and rear (drift adjustable rear) |
What makes the Grand Power P40 DA/SA 10mm stand out?
The Grand Power P40 DA/SA 10mm pistol is built for those who appreciate the power of the 10mm cartridge but also value a controllable shooting experience. The key feature here is Grand Power’s rotating barrel system. Unlike a traditional tilting barrel, this design helps mitigate felt recoil by absorbing some of the energy during the firing cycle. This can make a noticeable difference when shooting a potent round like the 10mm, particularly during longer range sessions or when trying to maintain quicker follow-up shots.
The DA/SA trigger mechanism provides versatility. You have a longer, heavier double-action pull for the first shot, which many prefer for safety during carry, followed by a crisp, lighter single-action pull for subsequent shots. The integrated decocker allows you to safely lower the hammer without pulling the trigger, placing the pistol in a double-action mode with a loaded chamber. This is a practical feature for those who carry with a round in the chamber but prefer the added security of a decocked hammer.
Construction-wise, it’s a polymer-framed gun with a steel slide, a common and effective combination for durability and weight management. The ergonomics are generally well-regarded, with a comfortable grip that fits a variety of hand sizes. For a 10mm, it’s a solid, practical choice that doesn’t break the bank.
Who should consider the Grand Power P40 DA/SA 10mm?
- Buy it if:
- You’re looking for a reliable, full-size 10mm pistol for range use, hunting backup, or home defense.
- You appreciate the recoil reduction benefits of a rotating barrel design.
- You prefer the versatility and safety features of a DA/SA trigger with a decocker.
- You want a powerful 10mm without the premium price tag of some other brands.
- You’re a fan of durable polymer-framed handguns.
- Skip it if:
- You prefer a striker-fired pistol for a consistent trigger pull (see our Striker-Fired Handguns for alternatives).
- You need something more compact for concealed carry (this is a full-size pistol).
- You’re on a very tight budget and the 10mm cartridge itself is too expensive for your regular shooting habits.
What are the pros and cons?
- ✅ Effective Recoil Mitigation: The rotating barrel system genuinely helps manage the 10mm’s recoil, making it more comfortable to shoot than some other 10mm platforms.
- ✅ DA/SA with Decocker: Offers a safe and versatile firing mechanism for carry and general use.
- ✅ Robust Construction: Polymer frame and steel slide are built to handle the pressures of the 10mm round.
- ✅ Good Ergonomics: The grip is designed to be comfortable and provide a solid hold.
- ✅ Value for Money: Provides a lot of features and 10mm power at a competitive price point.
- ✅ Reliable Feeding: Grand Power pistols generally have a good reputation for feeding various ammunition types.
- ❌ Limited Aftermarket: Compared to more popular brands, accessories and custom parts might be harder to find.
- ❌ Slightly Larger Profile: Being a full-size 10mm, it’s not the most discreet option for concealed carry.
- ❌ Trigger Learning Curve: The transition from DA to SA can take some practice for new users.
How does the Grand Power P40 compare to other 10mm pistols?
| Feature | Grand Power P40 DA/SA 10mm | Glock 20 Gen4 (Example Competitor) | Springfield Armory XD-M Elite 10mm (Example Competitor) |
|---|---|---|---|
| Material | Polymer Frame, Steel Slide | Polymer Frame, Steel Slide | Polymer Frame, Steel Slide |
| Quality | Solid, functional, good fit and finish | Known for rugged reliability | Refined, good accuracy potential |
| Compatibility | Grand Power P40 magazines, standard 10mm ammo | Glock 20 magazines, standard 10mm ammo | XD-M Elite 10mm magazines, standard 10mm ammo |
| Shipping | From Kansas Gunshop, Wichita, KS | Varies by retailer | Varies by retailer |
| Lifespan/Durability | Designed for long service life with 10mm | Proven long lifespan, very durable | Built for durability and performance |
| Price | $499.00 | ~$600-700 | ~$650-750 |
| Key Differentiator | Rotating barrel for recoil reduction, DA/SA with decocker | Simple, robust, striker-fired, wide aftermarket | Match-grade barrel, optics-ready (often), good ergonomics |
Frequently Asked Questions
What is a DA/SA pistol, and why does the Grand Power P40 have a decocker?
DA/SA stands for Double Action/Single Action. This means the first shot can be fired with a long, heavy double-action trigger pull (which cocks and releases the hammer), and subsequent shots are fired in single action (where the hammer is already cocked by the slide’s movement, resulting in a lighter, shorter pull). A decocker allows you to safely lower the hammer on a loaded chamber without pulling the trigger, placing the pistol in double-action mode for a safer carry condition.
How does the rotating barrel system in the Grand Power P40 affect shooting?
The rotating barrel system, unique to Grand Power, helps to reduce felt recoil by redirecting some of the recoil energy. Instead of just tilting, the barrel rotates during the firing cycle, which can make the 10mm cartridge feel more manageable and allow for quicker follow-up shots compared to fixed or tilting barrel designs.
Is the Grand Power P40 DA/SA 10mm suitable for concealed carry?
While technically possible, the Grand Power P40 is a full-size pistol. Its dimensions and weight, especially when loaded with 15 rounds of 10mm, make it less ideal for comfortable and discreet concealed carry compared to more compact options. It’s better suited for open carry, home defense, or as a field/hunting sidearm.
What kind of maintenance does the Grand Power P40 require?
Like any semi-automatic pistol, the Grand Power P40 requires regular cleaning and lubrication, especially after each range session. Pay attention to the barrel and slide rails. The rotating barrel mechanism might require specific lubrication points, so always refer to the owner’s manual for detailed instructions on care and maintenance.
Are magazines for the Grand Power P40 DA/SA 10mm readily available?
Magazines for Grand Power pistols are generally available, though perhaps not as ubiquitous as those for brands like Glock or Smith & Wesson. We stock them when possible, and they can also be found through various online retailers specializing in Grand Power accessories. It’s always a good idea to have a few spares.
Where can I buy firearms online?
You can buy firearms, including the Grand Power P40 DA/SA 10mm Pistol with Decocker, online from licensed FFL dealers like Kansas Gunshop (kansas-gunshop.com). The firearm will be shipped to your local FFL dealer for transfer, where you will complete the necessary background checks.
What is the typical accuracy of the Grand Power P40?
With its rotating barrel system and a good shooter, the Grand Power P40 is generally capable of good combat accuracy at typical pistol ranges (15-25 yards). While not a dedicated bullseye pistol, it’s more than accurate enough for defensive purposes, hunting backup, and general range enjoyment.
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Last updated: April 2026
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