Sig SAUER M400 SDI X-Series 5.56mm NATO 16in 30rd FDE Semi-Auto Rifle
Shop Sig Sauer ProductsShips to your local FFL
Firearms ship to a licensed dealer (FFL) near you for pickup, not to your home. Don't have one in mind? We'll help you pick a local FFL during checkout. Find an FFL near you.
Sig M400-SDI X 5.56 NATO 16" Semi-Auto Rifle - UPC 798681714469
The Sig M400-SDI X is engineered for exceptional performance and reliability. This semi-automatic rifle features a 16-inch barrel, a two-stage Matchlite Duo trigger, and a mid-length gas system. With fully ambidextrous controls and a Magpul SL stock, it offers versatility and comfort for all shooters.
Specs:
Technical Specifications
| Caliber | 223 Rem | 5.56 NATO |
|---|---|
| Capacity | 30 |
| Barrel Length | 16.00" |
| Action Type | Semi-Auto |
| Finish | Flat Dark Earth |
| Weight | 9.75 lbs |
| Overall Length | 36.50" |
| Frame Material | Alloy |
| Receiver Material | Aluminum |
| Stock Material | 6 Position Magpul MOE-SL |
| Barrel Description | Threaded |
| Sights | None |
| Trigger Type | Sig Two-Stage Matchlite Duo |
| Safety | Ambidextrous Thumb Safety |
| Thread Pitch | 1/2x28 |
| Twist Rate | Sig Flash Hider |
| Magazine Type | Polymer AR Style Magazine |
| Manufacturer | Sig Sauer |
| Model | SIGM400 |
| SKU | D983506 |
| UPC | 798681714469 |
| Availability | In Stock |
Product Videos
Watch reviews, unboxings, and tutorials for this product.
Customer Reviews
No reviews yet. Be the first to review this product!
Shipping & Returns
Ships to your local FFL
This firearm ships to a licensed dealer (FFL) near you for pickup, not to your home. You'll choose your FFL during checkout — and if you don't have one in mind, we'll help you find a nearby dealer. You complete the background check and pick it up there.
Shipping Information
- Orders typically process within 1-2 business days
- Firearms ship via FedEx or UPS with signature required
- Tracking information provided for all orders
- Shipping costs calculated at checkout based on weight and destination
- Total delivery time to FFL: typically 3-5 business days
Return Policy
- Firearms must be returned unfired and in original packaging within 3 days of FFL transfer
- 15% restocking fee applies to all firearm returns
- Contact us for return authorization before shipping items back
- Original shipping costs are non-refundable
Questions?
Contact us at (329) 227-0508 or submit a question for assistance with shipping or returns.
What is MAP Pricing?
MAP stands for Minimum Advertised Price. It's a policy set by manufacturers that limits how low retailers can advertise their prices.
The good news? We can often sell below MAP - we just can't show that price publicly. When you request a price by email or add to cart, you'll see our actual (often lower) price.
This isn't a trick - it's how we stay compliant while still offering you the best deals possible.