Sig RM400SDI16BR5FX M400 5.56 NATO 16" 30+1 Semi-Auto Black Rifle
Shop Sig Sauer ProductsPurchase guarantee: You are guaranteed to receive the exact UPC-numbered item you order (UPC 798681716128). Please verify all product details and specifications with the manufacturer.
⚠️ FFL Required
This item requires shipment to a Federal Firearms License (FFL) dealer. You will need to select an FFL dealer during checkout.
Sig Sauer | M400 Sentry | MPN: RM400-SDI-16B-R5FX | UPC: 798681716128 | .223 REM | 5.56 NATO | Semi-Auto | 16" Barrel | 30+1 | 36.5" OAL | 8 lbs
Features a ROMEO5 GENII red dot sight and a Foxtrot-MSR light. Includes a collapsible Magpul MOE-SL stock and adjustable vertical foregrip.
Specifications:
- Brand: Sig Sauer
- Model: M400 Sentry
- MPN: RM400-SDI-16B-R5FX
- UPC: 798681716128
- Caliber: .223 REM | 5.56 NATO
- Action: Semi-Auto
- Barrel Length: 16"
- Twist Rate: 1:7
- Threaded Barrel: Yes
- Thread Pitch: 1/2x28
- Overall Length: 36.5"
- Weight: 8 lbs
- Capacity: 30+1
- Finish: FNC
- Frame Material: Threaded
- Sights: ROMEO5 GENII Red Dot with 2 MOA Dot
- Stock: 6 Position Magpul MOE-SL
- Grips: Collapsible / Folding
- Safety Type: Ambidextrous
- Trigger Type: Sig Two-Stage Matchlite Duo
- Magazine Type: 30 rd. Polymer Magazine
- Hand: Ambidextrous
- Light Output: 1250 Lumens, 33000 Candela
- Waterproof Rating: IPX7
- Includes: Three M-LOK Rail Covers
Technical Specifications
| Caliber | 223 Rem | 5.56 NATO |
|---|---|
| Capacity | 30 |
| Barrel Length | 16.00" |
| Action Type | Semi-Auto |
| Finish | FNC |
| Weight | 10.9 lbs |
| Overall Length | 36.50" |
| Frame Material | Alloy |
| Receiver Material | Alloy Steel |
| 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 | B1199656 |
| UPC | 798681716128 |
| Availability | In Stock |
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Shipping & Returns
⚠️ FFL Transfer Required
This firearm must be shipped to a Federal Firearms License (FFL) dealer. You will select your FFL dealer during checkout. We ship to your chosen FFL dealer, and you complete the background check and pickup 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 706-300-4876 or submit a question for assistance with shipping or returns.
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