• Home
  • About Us
  • Everything you need to know about reloading
    Start Shopping
      Reloading Dies
      Reloading Presses & Accessories
      Reloading Tools
      Reloading Components
      Powder Handling
      Measuring Tools
      Case Cleaning & Prep
      Bullet Casting
      Shotshell Reloading
  • My Account
  • Track My Order
  • Sage Reloading Supply
  • Contact
  • Home
  • About Us
  • Everything you need to know about reloading
    Start Shopping
      Reloading Dies
      Reloading Presses & Accessories
      Reloading Tools
      Reloading Components
      Powder Handling
      Measuring Tools
      Case Cleaning & Prep
      Bullet Casting
      Shotshell Reloading
  • My Account
  • Track My Order
  • Sage Reloading Supply
  • Contact
M400 SDI XSERIES 5.56X45 NATO SEMI-AUTO RIFLE - M400 SDI XSERIES 5.56X45 NATO 16'' BBL (1)30RD MAG MOSS GREEN

M400 SDI XSERIES 5.56X45 NATO SEMI-AUTO RIFLE – M400 SDI XSERIES 5.56X45 NATO 16” BBL (1)30RD MAG MOSS GREEN

[cfs_specs_box]
SIG SAUER's M400 XSeries 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 XSeries 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 XSeries 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 XSeries utilizes the highest quality chrome-lined barrels, and performance coatings to ensure maximum durability and reliability.
 
M400 SDI XSeries FEATURES INCLUDE:
  • Ambidextrous Bolt Catch and Release
  • Hybrid Compensating Flash Hider
  • Dual Clamp Handguard Locking System for Reduced Deflection
  • Low Profile Gas Block with Mid-Length System
  • SIG Flatblade Match Trigger
  • Magpul SL Stock
SPECIFICATIONS:
  • Caliber – 5.56 NATO
  • Mags Included – (1) 30 Round Polymer Mag
  • Mag Type – AR-15
  • Action Type – Semi-Auto
  • Stock Type – Magpul SL Stock
  • Barrel length – 16 in [292 mm]
  • Barrel Material – Chrome/Moly Steel
  • Trigger Type – SIG Flat Blade Match
  • Twist Rate – 1:7
  • Forend Type – Alloy
  • Grip Type – Polymer
  • Receiver Finish – Black Anodized
  • Overall Length – 33.5 in [851 mm]
  • Overall Width – 2.8 in [69.8 mm]
  • Height – 7.5 in (190.5 mm)
  • Accessory Rail – M-LOK
  • Operating System – Direct Impingement
  • Weight – 7.0 lbs (3.2 kg)
Description

Original price was: $1,599.99.Current price is: $1,395.00.

SIG SAUER's M400 XSeries 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 XSeries 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 XSeries 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 XSeries utilizes the highest quality chrome-lined barrels, and performance coatings to ensure maximum durability and reliability.
 
M400 SDI XSeries FEATURES INCLUDE:
  • Ambidextrous Bolt Catch and Release
  • Hybrid Compensating Flash Hider
  • Dual Clamp Handguard Locking System for Reduced Deflection
  • Low Profile Gas Block with Mid-Length System
  • SIG Flatblade Match Trigger
  • Magpul SL Stock
SPECIFICATIONS:
  • Caliber – 5.56 NATO
  • Mags Included – (1) 30 Round Polymer Mag
  • Mag Type – AR-15
  • Action Type – Semi-Auto
  • Stock Type – Magpul SL Stock
  • Barrel length – 16 in [292 mm]
  • Barrel Material – Chrome/Moly Steel
  • Trigger Type – SIG Flat Blade Match
  • Twist Rate – 1:7
  • Forend Type – Alloy
  • Grip Type – Polymer
  • Receiver Finish – Black Anodized
  • Overall Length – 33.5 in [851 mm]
  • Overall Width – 2.8 in [69.8 mm]
  • Height – 7.5 in (190.5 mm)
  • Accessory Rail – M-LOK
  • Operating System – Direct Impingement
  • Weight – 7.0 lbs (3.2 kg)

Out of stock

SKU 430113882 Category

Description

SIG SAUER's M400 XSeries 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 XSeries 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 XSeries 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 XSeries utilizes the highest quality chrome-lined barrels, and performance coatings to ensure maximum durability and reliability.
 
M400 SDI XSeries FEATURES INCLUDE:
  • Ambidextrous Bolt Catch and Release
  • Hybrid Compensating Flash Hider
  • Dual Clamp Handguard Locking System for Reduced Deflection
  • Low Profile Gas Block with Mid-Length System
  • SIG Flatblade Match Trigger
  • Magpul SL Stock
SPECIFICATIONS:
  • Caliber – 5.56 NATO
  • Mags Included – (1) 30 Round Polymer Mag
  • Mag Type – AR-15
  • Action Type – Semi-Auto
  • Stock Type – Magpul SL Stock
  • Barrel length – 16 in [292 mm]
  • Barrel Material – Chrome/Moly Steel
  • Trigger Type – SIG Flat Blade Match
  • Twist Rate – 1:7
  • Forend Type – Alloy
  • Grip Type – Polymer
  • Receiver Finish – Black Anodized
  • Overall Length – 33.5 in [851 mm]
  • Overall Width – 2.8 in [69.8 mm]
  • Height – 7.5 in (190.5 mm)
  • Accessory Rail – M-LOK
  • Operating System – Direct Impingement
  • Weight – 7.0 lbs (3.2 kg)

Additional information

Weight 8 lbs
Finish

Moss Green
Magazine Included

1 x 30-Round
Make/Model

Sig Sauer, M400
Muzzle

Flash Hider
Front Sight

None
Weight

7 lbs
Cartridge

AKK_5.56 x 45
Length

33.25''
Rear Sight

None
Model

M400
Action Type

Semi-Auto
Barrel Length

16''
Magazine Type

Removable
Capacity

30+1-Round
Make

Sig Sauer
Stock Material

Polymer

Frequently Asked Questions

Are these brass cases and reloading components factory-new or once-fired? +

We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.

Will this case trimmer gauge or die set work with my progressive press setup? +

Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.

Do you enforce shipping restrictions on powder, primers, or live ammunition? +

Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.

How can I track my shipment to ensure delivery safety? +

Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.

Can I return precision measuring tools or die components if they don’t fit? +

We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.

You may also like...

Related products