SIG SAUER M400 SDI XSeries Features
The M400 SDI XSeries is equipped with a fluted competition barrel, optimizing heat dissipation and weight reduction for improved performance. The SIG Flatblade Match Trigger ensures a clean and consistent break, enhancing precision shooting.
With a hybrid compensator/flash hider, this rifle offers enhanced muzzle control while reducing flash signature, making it ideal for tactical and competition shooting. Its collapsible and folding MAGPUL SL stock adds versatility, allowing for compact storage and customizable length-of-pull adjustments.
SIG SAUER M400 SDI XSeries Specifications
- Caliber: .223 Rem / 5.56 NATO
- Action: Semi-Auto
- Barrel Length: 16 inches
- Twist Rate: 1:7 inches
- Overall Length: 33.5″ – 36.8″
- Capacity: 30+1 rounds
- Stock Type: Collapsible / Folding MAGPUL SL Stock
- Thread Pattern: 1/2×28
- Sights: None
- Weight: 7 lbs. (Shipping Weight: 10 lbs.)
- Additional Features:
- Fluted Competition Barrel
- SIG Flatblade Match Trigger
- Hybrid Compensator/Flash Hider
| Barrel Length | 16 |
|---|---|
| Caliber | 5.56 |
| Capacity | 30 |
| Condition | New in Box |
| Finish Per Color | Black |
| Manufacturer | Sig Sauer |
| Manufacturer Part Number | RM400-SDI-16B-P |
| Model | M400 SDI XSeries |
| Type | Modern Sporting Rifles |
| UPC | 798681664634 |
Frequently Asked Questions About This Product
Why buy Sig Sauer M400 SDI XSeries 5.56 16" Barrel 30-Rounds from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Sig Sauer M400 SDI XSeries 5.56 16" Barrel 30-Rounds?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Sig Sauer M400 SDI XSeries 5.56 16" Barrel 30-Rounds available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: Modern Sporting Rifles, RIFLES.
What tags or features does this product have?
Key features and tags for this product include: Modern Sporting Rifles, RIFLES.
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for Sig Sauer M400 SDI XSeries 5.56 16" Barrel 30-Rounds
All firearms, including the Sig Sauer M400 SDI XSeries 5.56 16" Barrel 30-Rounds, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Sig Sauer M400 SDI XSeries 5.56 16" Barrel 30-Rounds is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
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