

SIG Sauer M400 5.56 Nato WRM400556N11BPROSBR
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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.
Quick specs | SIG SAUER SIG M400 — AR-style semi-automatic rifle
The SIG SAUER M400 is an AR-style semi-automatic rifle series produced by SIG SAUER. It is offered in multiple configurations and chamberings across the product line.
Specifications:
- Product name: SIG SAUER SIG M400
- Manufacturer: SIG SAUER
- Type: AR-style semi-automatic rifle
- UPC: 798681721382
Technical Specifications
| Caliber | 5.56 NATO |
|---|---|
| Barrel Length | 11.50" |
| Action Type | Semi-Automatic |
| Weight | 9.68 lbs |
| Manufacturer | Sig Sauer |
| Model | 400 |
| SKU | kr1435983 |
| UPC | 798681721382 |
| Availability | In Stock |
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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
- 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
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 443-370-5170 or submit a question for assistance with shipping or returns.







