Sig Sauer M400-SDi X 5.56 Nato Rifle with FDE Cerakote Finish

  • Item Number: RM400-SDI-16B-FDE
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  • Condition: New
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    $1,599.99
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Columbus: Out of Stock
Hebron: Out of Stock
Lebanon: Limited Quantity
Obetz: Limited Quantity
Springdale: Out of Stock

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Special Promotion

Buy this firearm from Vance Outdoors and receive these additional items free.

This package contains (1)SIG M400 SDI FDE Rifle and (1)$150 Vance Gift Card, and (1) $10 Vance Gift Card

Offer valid on orders placed between Dec 26, 2025 and Feb 22, 2026. While supplies last. Free items are void where prohibited by law. No substitutions. Vance Outdoors reserves the right to change or modify this promotion at any time.

Product Description

What's in the Box

  • Sig Sauer M400-SDi X 5.56 Nato Rifle
  • (1) 30 Round Magazine
  • Owner's Manual

The M400-SDI X has been developed with the input from the professional instructors at SIG SAUER Academy. Building upon their decades of experience and countless hours of instruction, we have developed the M400-SDI X to meet the highest standards of performance and reliability. With fully ambidextrous controls including a bolt catch/and release unique to the M400-SDI lower-receiver, the M400-SDI X delivers advanced performance for both left & right-handed shooters and makes transitional shooting easier than ever. The free-floating handguard utilizes a new steel lockup design that significantly reduces handguard deflection by providing maximum rigidity and allows for accessories to be attached on all four sides with no effect on accuracy. The 2-Stage Matchlite Duo trigger provides an out-of-the-box crisp 4.5 - 6.5lb pull weight with a flat blade design for a precision feel. The M400-SDI X utilizes the highest quality performance coatings to ensure maximum durability and reliability.

Firearm Features

  • FDE Cerakote Finish
  • Ambidextrous Bolt Catch and Release
  • Compensator/Flash Hider
  • Dual Clamp Handguard Locking System for Reduced Deflection
  • Low-Profile Gas Block with Mid-Length Gas System
  • SIG 2-Stage Matchlite Duo Trigger
  • Magpul SL Stock

Firearm Specifications

  • Manufacturer: Sig Sauer
  • Model: M400-SDI X
  • Caliber: 5.56 Nato
  • Barrel Length: 16" Threaded
  • Overall Length: 33.25"-36.5"
  • Twist Rate: 1:7"
  • Finish: FDE Cerakote
  • Sights: None; Optic Ready; Picatinny Rail
  • Grips: Reduced Angle
  • Stock: Magpul BSL Pistol Stabilizing Brace
  • Magazine Capacity: 30+1

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