FN SCAR 15P Stock: Stabilizing the Tactical Pistol for Maximum Control
The FN SCAR 15P is a compact powerhouse chambered in 5.56 NATO, offering the legendary reliability and modularity of the SCAR platform in a pistol configuration. While it ships from the factory without a stock to comply with U.S. pistol regulations, many users seek ways to enhance control and accuracy by adding a FN SCAR 15P stock—either through stabilizing braces or legal SBR conversions.
What Is the FN SCAR 15P?
The SCAR 15P is a pistol variant of the SCAR 16, featuring:
- Barrel: 7.5-inch cold hammer-forged, chrome-lined
- Caliber: 5.56x45mm NATO
- Receiver: Monolithic aluminum upper
- Controls: Fully ambidextrous
- Stock Configuration: Ships without a stock
It retains the SCAR’s classic long-stroke gas piston system and full-length Picatinny rail for optics, but lacks a buttstock or brace by default.
Can You Add a Stock to the FN SCAR 15P?
Legally, yes—but only with proper ATF paperwork.
Attaching a traditional rifle stock to the SCAR 15P transforms it from a pistol into a Short-Barreled Rifle (SBR), which is regulated under the National Firearms Act (NFA). This requires filing an ATF Form 1, paying a $200 tax stamp, and receiving approval before installing a stock.
Stock & Brace Options for FN SCAR 15P
If you’re looking to stabilize your SCAR 15P, here are your main upgrade paths:
1. 
SBR Conversion with OEM SCAR Stock
- FN SCAR folding stocks (as used on SCAR 16 and 17) are compatible once you have SBR approval.
- Includes folding mechanism, adjustable cheek riser, and length of pull.
2. 
Aftermarket Stock Adapters
- Companies like KDG (Kinetic Development Group) offer stock adapters for SCAR platforms.
- Allows attachment of ACR or AR-style stocks after ATF approval.
3. 
Stabilizing Braces (Where Legal)
- As of 2025, the legal landscape for braces is complex. Many braces were reclassified by the ATF, but ongoing court cases may affect enforcement.
- Some owners use non-adjustable accessories like cheek rests as an alternative.
FN SCAR 15P Stock Installation: Things to Know
- Uses SCAR rear hinge mount system
Simple drop-in fit once the rear plate is removed
NFA paperwork is mandatory before stock installation
Do not install a rifle stock before receiving ATF Form 1 approval
Where to Buy FN SCAR 15P Stock & Accessories
FN America – OEM SCAR stocks and accessories Kinetic Development Group (KDG) – Stock adapters & hardware kits Midwest Industries – Mounting hardware & rear plates Brownells & Primary Arms – OEM and aftermarket SCAR stocks and parts
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FAQ
1. Can I legally add a stock to my SCAR 15P?
Only if you file an ATF Form 1 and receive approval to convert it to an SBR.
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2. What stock is compatible with the SCAR 15P?
The SCAR 16/17 folding stock is directly compatible once SBR-converted.
3. Are braces still legal for SCAR 15P?
As of now, stabilizing brace legality varies by state and federal litigation. Check current ATF regulations and court rulings.
4. Do I need a special adapter to install a stock?
No adapter is needed for FN OEM stocks, but aftermarket stocks may require one, like those from KDG.
5. Where can I buy a SCAR stock for my 15P?
Check FN America, Brownells, KDG, or Primary Arms for in-stock SCAR-compatible stocks.
Upgrading your FN SCAR 15P with a proper FN SCAR 15P stock transforms it from a tactical pistol into a controllable, compact rifle platform—perfect for close-quarters operations or range use. Just be sure to stay compliant with federal and state laws before making modifications.