HOMEFirearmsRiflesSemi Auto RiflesSig SAUER M400 SDI X-Series 5.56mm NATO 16" 30rd Moss Green Semi-Auto Rifle
Sig SAUER M400 SDI X-Series 5.56mm NATO 16" 30rd Moss Green Semi-Auto Rifle - Sig Sauer - 223 Rem | 5.56 NATO for sale at TheGunDock
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Sig SAUER M400 SDI X-Series 5.56mm NATO 16" 30rd Moss Green Semi-Auto Rifle

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$1,599.99
$2,006.25 Save $406.26 (20%)
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SKU: D983496
UPC: 798681701216
Model: SIGM400
MPN: RM400-SDI-16B-MSGRN
New ✓ In Stock — Ships in 1-3 Days

⚠️ FFL Required

This item requires shipment to a Federal Firearms License (FFL) dealer. You will need to select an FFL dealer during checkout.

Sig M400-SDI X 5.56 NATO 16" Semi-Auto Rifle - RM400SDI16BMSGRN

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:

  • Brand: Sig Sauer
  • Model: M400-SDI X
  • Caliber: 5.56 NATO
  • Barrel Length: 16 inches
  • Capacity: 30+1
  • Trigger: Two-Stage Matchlite Duo
  • Overall Length: 33.25 to 36.50 inches
  • Weight: 7 lbs
  • Stock: 6 Position Magpul SL
  • Flash Hider: Sig Flash Hider-Compensator
  • Operating System: Mid-Length Direct Impingement
  • Controls: Fully Ambidextrous
  • UPC: 798681701216
  • 223 Rem | 5.56 NATO 30+1 Capacity 16.00" Barrel Semi-Auto 9.95 oz Threaded 1/2x28 Moss Green

    Technical Specifications

    Caliber 223 Rem | 5.56 NATO
    Capacity 30
    Barrel Length 16.00"
    Action Type Semi-Auto
    Finish Moss Green
    Weight 9.95 oz
    Sights None
    Trigger Type Sig Two-Stage Matchlite Duo
    Thread Pitch 1/2x28
    Twist Rate Sig Flash Hider
    Manufacturer Sig Sauer
    Model SIGM400
    SKU D983496
    UPC 798681701216
    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 502-272-4859 or submit a question for assistance with shipping or returns.

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