Kansas Gunshop is a Wichita, KS-based retailer specializing in firearm parts and accessories. The Magpul PRS® GEN3 Precision Adjustable Stock, Multi is a field-precision stock for AR15/M16 and AR10/SR25 platforms, offering tool-less length of pull and cheek weld adjustments. Its robust construction and versatile compatibility make it a top choice for precision shooting. Available now from Kansas Gunshop for $240.0.
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 Magpul PRS® GEN3 stock?
| Product Type | Precision Adjustable Stock |
|---|---|
| Material | Milspec anodized aluminum (adjustments), Steel (components), Polymer (body) |
| Manufacturing | Injection molded polymer, CNC machined aluminum |
| Finish | Matte Black (polymer), Anodized (aluminum) |
| Hardness/Quality | High-strength, impact-resistant polymer; corrosion-resistant aluminum and steel |
| Compatibility | AR15/M16 Carbine and A5/SR25/AR10 rifle-length receiver extensions (tubes) |
| Installation/Usage | Tool-less length of pull and cheek piece height adjustment. Installs on standard buffer tubes. |
| Weight | 27.8 oz (788 g) |
| Length of Pull Adjustment Range | 1.4 inches (3.5 cm) |
| Length of Pull (collapsed) | 13.8 inches (35.0 cm) |
| Length of Pull (extended) | 15.2 inches (38.6 cm) |
| Cheek Piece Height Adjustment Range | 0.8 inches (2.0 cm) |
| Country of Origin | USA |
| Condition | New |
| SKU | MAG672BLK |
What are the key features of the Magpul PRS® GEN3?
- Tool-less Adjustments: The PRS® GEN3 offers quick, intuitive, and tool-less adjustments for both length of pull and cheek piece height. This is a significant improvement for shooters needing to adapt to different shooting positions or gear.
- Enhanced Compatibility: Designed to fit both rifle-length A1/A2 fixed buffer tubes and AR15/M16 carbine buffer tubes, as well as A5/SR25/AR10 rifle-length extensions. This versatility means fewer compatibility headaches for different rifle builds.
- Robust Construction: Combining a polymer body with aluminum and steel adjustment components ensures durability under demanding conditions. The anodized aluminum provides a hard-wearing surface for the adjustment mechanisms.
- Precision Adjustability: The fine-tuned adjustments allow shooters to achieve a consistent and repeatable cheek weld and length of pull, which is crucial for accuracy in precision shooting.
- Rubber Butt-Pad: A cant- and height-adjustable rubber butt-pad provides a stable interface with the shoulder and helps manage recoil.
- Multiple Sling Mounts: Features a 1.25-inch ambidextrous sling loop, a QD sling swivel cup, and an additional reversible QD sling swivel cup for various sling configurations.
- Bottom M-LOK Slots: M-LOK slots on the bottom of the stock allow for attachment of monopods or other accessories, further enhancing its utility for precision work.
Who is the Magpul PRS® GEN3 Precision Adjustable Stock for?
The Magpul PRS® GEN3 Precision Adjustable Stock, Multi is engineered for shooters who prioritize precision, adaptability, and robust construction in their rifle setup.
Buy it if:
- You are building a precision rifle (AR-15 or AR-10 platform) and demand consistent cheek weld and length of pull.
- You participate in competitive shooting sports like PRS, long-range tactical matches, or benchrest shooting where fine adjustments are critical.
- You frequently shoot from various positions (prone, bench, barricade) and need quick, tool-less adjustments to maintain proper form.
- You value durable, high-quality components that can withstand rigorous use in the field.
- You own multiple AR platform rifles and appreciate a stock that offers broad compatibility with different buffer tube types.
- You’re looking to upgrade from a basic fixed or collapsible stock to a dedicated precision solution.
Skip it if:
- You are building a lightweight, minimalist carbine for close-quarters combat or casual plinking; the weight and bulk of this stock would be counterproductive. See our lightweight carbine stocks for alternatives.
- Your budget is extremely tight; while a strong value, there are less expensive, albeit less feature-rich, options available.
- You rarely adjust your stock and prefer a simple, set-and-forget solution without the added complexity of multiple adjustment points.
What are the pros and cons of the Magpul PRS® GEN3?
Pros:
- ✅ Exceptional Adjustability: Tool-less, precise adjustments for both LOP and cheek height allow for a custom fit to any shooter and shooting position.
- ✅ Broad Compatibility: Works with both carbine and rifle-length buffer tubes, simplifying selection and offering flexibility.
- ✅ Rugged Construction: A combination of high-strength polymer, anodized aluminum, and steel ensures long-term durability and reliability.
- ✅ Stable Shooting Platform: The wide footprint, adjustable butt-pad, and solid lock-up contribute to a very stable shooting experience.
- ✅ Integrated M-LOK: Bottom M-LOK slots are convenient for attaching monopods or other stability-enhancing accessories.
Cons:
- ❌ Weight: At nearly 28 ounces, it adds significant weight to the rear of the rifle, which might not be desirable for all applications. If you need a lighter stock, consider a standard collapsible stock.
- ❌ Bulk: The PRS® GEN3 is a large stock. It’s not designed for compactness or easy maneuverability in tight spaces.
- ❌ Price Point: While justified by its features and quality, the $240 price tag is a considerable investment compared to basic stocks.
How does the Magpul PRS® GEN3 compare to other precision stocks?
| Feature | Magpul PRS® GEN3 | Basic Adjustable Stock (e.g., Generic Carbine Stock) | Premium Precision Stock (e.g., Luth-AR MBA-3) |
|---|---|---|---|
| Material | Polymer body, Anodized Aluminum / Steel adjustments | Injection molded polymer | Glass-filled nylon, Aluminum adjustments |
| Quality | High-grade, robust, precision-machined components | Standard, functional, entry-level | High-grade, durable, well-finished |
| Compatibility | AR15/M16 Carbine & Rifle / A5 / AR10/SR25 tubes | AR15/M16 Carbine tubes (most common) | AR15 Carbine / A5 / AR10 Carbine tubes |
| Shipping | Ships from Wichita, KS (Kansas Gunshop) | Varies widely by retailer | Varies widely by retailer |
| Lifespan/Durability | Excellent, built for long-term heavy use | Good for casual use, may show wear faster | Excellent, comparable to PRS GEN3 |
| Price | ~$240.0 | ~$30-80 | ~$150-180 |
Frequently Asked Questions about the Magpul PRS® GEN3 Precision Adjustable Stock
What buffer tube does the Magpul PRS® GEN3 Precision Adjustable Stock, Multi fit?
The Magpul PRS® GEN3 is designed to fit both rifle-length A1/A2 fixed receiver extensions (buffer tubes) and AR15/M16 carbine-length receiver extensions, as well as A5/SR25/AR10 rifle-length extensions. This makes it highly versatile for various AR platforms.
Is the Magpul PRS® GEN3 stock heavy?
Yes, at 27.8 ounces (approximately 1.74 pounds), the Magpul PRS® GEN3 is a relatively heavy stock. This weight is intentional for balance and stability in precision shooting applications but may not be ideal for lightweight builds.
Can I adjust the length of pull and cheek weld without tools?
Yes, one of the primary features of the Magpul PRS® GEN3 is its tool-less adjustment for both length of pull and cheek piece height. This allows for quick and easy customization in the field.
What materials is the Magpul PRS® GEN3 made from?
The stock features a high-strength polymer body, with adjustment mechanisms made from milspec anodized aluminum and steel components. This combination ensures durability and precise functionality.
Does the PRS® GEN3 have sling attachment points?
Yes, it includes multiple sling attachment points: a 1.25-inch ambidextrous sling loop, a QD sling swivel cup, and an additional reversible QD sling swivel cup to accommodate various sling configurations.
Where can I buy firearm stocks online?
You can buy firearm stocks, including the Magpul PRS® GEN3 Precision Adjustable Stock, Multi, online at Kansas Gunshop (kansas-gunshop.com). We ship directly from Wichita, KS.
Is the Magpul PRS® GEN3 suitable for hunting rifles?
For precision hunting rifles, especially those where stability and consistent cheek weld are paramount for long-range shots, the PRS® GEN3 can be an excellent choice. However, its weight might be a consideration for mobile hunting scenarios where a lighter rifle is preferred.
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