Sig Sauer M400 SDI X-Series 5.56mm Semi-Automatic Rifle with M-LOK Handguard

  • Item Number: RM400-SDI-16B-P
  • /
  • View More Items by Sig Sauer
  • /
  • Condition: NEW
$1,499.99 $1,649.99

In Stock with FREE shipping
  • SMITH AND WESSON MP 15 SPORT II 5.56 16` BBL BLACK

    Smith & Wesson MP-15 Sport II 5.56mm Semi-Automatic Rifle with Additional 10-Round Magazine
    $599.99

  • RUGER AR-556 5.56NATO W/LITE M-LOK RAIL

    Ruger AR-556 MPR 5.56mm Semi-Automatic Rifle with Lite Free-Float M-LOK Rail
    $1,129.00 $849.99

  • COLT M4 CARBINE 5.56MM SEMI-AUTOMATIC RIFLE

    Colt M4 Carbine 5.56x45 NATO CR6920 Series
    $1,099.99

  • SPRINGFIELD HELLION 5.56NATO SEMI-AUTOMATIC BULLPUP RIFLE WITH 16 INCH BARREL

    Springfield Hellion 5.56mm Semi-Automatic Fully-Ambidextrous Bullpup Rifle with 16 Inch Barrel
    $1,999.99

  • DANIEL DEFENSE DDM4 M4A1 5.56 NATO 14.5 IN BBL FDE FLASHIDER PERMANENTLY ATTACHED

    Daniel Defense M4A1 5.56 NATO AR-15 with MilSpec + Finish
    $2,432.00

  • DANIEL DEFENSE MK12 5.56MM SEMI-AUTOMATIC RIFLE

    Daniel Defense MK12 5.56mm Semi-Automatic AR-15 Rifle
    $2,457.00

  • DANIEL DEFENSE DDM4 V7 BLACK 5.56 16 IN BBL 30 RD MAG

    Daniel Defense DDM4 V7 5.56mm Semi-Automatic Rifle with Geissele SSA Trigger and Magpul Pro Iro
    $2,022.00

  • ATI OMNI HYBRID MAXX 5.56MM NATO AR-15 WITH COLLAPSIBLE STOCK

    American Tactical Omni Hybrid MAXX 5.56mm NATO AR-15 with Collapsible Stock
    $549.99

  • SPRINGFIELD HELLION 5.56 BULLPUP 16.5 IN BBL FDE GEAR UP 2 MAGS RANGE BAG

    Springfield Hellion Bullpup FDE 5.56mm Gear Up Rifle Package with Extra Mag, Vortex Optic, S
    $1,679.99

  • DANIEL DEFENSE DDM4 V7 RATTLECAN 5.56MM NATO

    Daniel Defense DDM4 V7 Rattlecan 5.56mm NATO Semi-Automatic Rifle
    $2,161.00

  • COLT M4 5.56 NATO MID LENGTH CARBINE WITH ADJUSTABLE BLACK SYNTHETIC STOCK

    Colt M4 5.56 NATO Mid Length Carbine with Adjustable Black Synthetic Stock
    $1,299.99

  • SPRINGFIELD HELLION 5.56 BULLPUP 16.5 IN BBL ODG GEAR UP 2 MAGS RANGE BAG

    Springfield Hellion Bullpup OD Green 5.56mm Gear Up Rifle Package with Extra Mag, Vortex Red Dot
    $1,699.99

  • PMC X-TAC 5.56mm NATO 62 gr M855 Green-Tip 20/Box

    PMC X-TAC 5.56mm NATO 62 gr M855 Green-Tip 20/Box
    $9.97
    ($0.50 / round)

  • PMC 5.56mm 55 gr FMJ-BT X-TAC 20/Box

    PMC 5.56mm 55 gr FMJ-BT X-TAC 20/Box
    $9.97
    ($0.50 / round)

  • PMC 5.56mm 62 gr FMJ Green Tip X-TAC Battle Pack 120 Rounds in Vacuum-Sealed Bag

    PMC 5.56mm 62 gr FMJ Green Tip X-TAC Battle Pack 120 Rounds in Vacuum-Sealed Bag
    $79.99
    ($0.67 / round)

  • Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box

    Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box
    $16.08 $10.99
    ($0.55 / round)

  • Hornady 5.56 NATO 55 gr Hollow Point Match Frontier 20/Box

    Hornady 5.56 NATO 55 gr Hollow Point Match Frontier 20/Box
    $13.99
    ($0.70 / round)

  • Hornady 5.56mm NATO 62 gr FMJ Black 20/Box

    Hornady 5.56mm NATO 62 gr FMJ Black 20/Box
    $23.53 $15.99
    ($0.80 / round)

Product Description

What's in the Box

  • Sig Sauer M400 SDI X-Series 5.56mm Semi-Automatic Rifle with M-LOK Handguard
  • (1) 30-Round Magazine
  • Owner's Manual

The SIG SAUER M400 SDI XSERIES packs a rich set of features and upgrades into the M400 platform delivering an advanced performance rifle right out of the box. The M400 XSERIES lower features fully ambidextrous controls, including bolt catch & release, selector switch, charging handle and mag release. Also unique to the XSERIES is a precision machined lightning cut upper and lower with a handguard clamp system designed to minimize deflection when using mounted accessories. Other features include a hybrid flash hider/compensator, 2-Stage Matchlite Trigger and Magpul SL Telescoping Stock.

Firearm Specifications

  • Manufacturer: Sig Sauer
  • Model: M400 SDI X-Series
  • Caliber: 5.56mm NATO
  • Barrel Length: 16"
  • Overall Length: 33.5"
  • Overall Width: 2.8
  • Twist Rate: 1:7"
  • Trigger Type: SIG Flat Blade Match
  • Stock Type: Magpul SL Stock
  • Barrel Material: Chrome / Moly Steel
  • Operating System: Direct Impingement
  • Weight: 7 lbs
  • Magazine Capacity: 30 Rounds
  • Accessory Rail: M-LOK

Customer Comments & Questions

Customer Reviews

No reviews have been written for this product.

Write a review