great lakes firearms logo
  • Shop
  • About
  • Services
    • Engraved Guns
    • Light Gunsmithing
    • Ultrasonic Gun Cleaning
  • Contact
$0.00 0 Cart
  • Ammo
    • Handgun Ammunition
    • Rifle Ammunition
    • Rimfire Ammunition
    • Shotgun Shells
  • Guns
    • Combination Guns
    • Derringers
  • Handguns
    • Semi Auto Handguns
    • Single Shot Handguns
    • Revolvers
    • Other Handguns
  • Magazines
    • AK Magazines
    • Handgun Magazines
    • Rifle Magazines
    • Shotgun Magazines
  • Optics
    • Binoculars
    • Gun Scopes
    • Gun Sights
    • Laser Sights
    • Night Vision
    • Range Finders
    • Red Dots Sights
    • Sight Magnifiers
    • Spotting Scopes
    • Thermal Sights
  • Rifles
    • AR Rifles
    • AK Rifles
    • Bolt Action Rifles
    • Lever Action Rifles
    • Pump Action Rifles
    • Semi Auto Rifles
    • Single Shot Rifles
    • Other Rifles
  • Parts
    • AR Lower Parts
    • AR Lower Parts Kits
    • AR Upper Parts
    • AR15 Parts
    • Class 3 Parts & Accessories
    • Glock Parts
    • Gun Parts
    • Gun Parts Kits
    • Handgun Parts
    • Other AR15 Accessories & Parts
  • Shotguns
    • Bolt Action Shotguns
    • Lever Action Shotguns
    • Over Under Shotguns
    • Pump Action Shotguns
    • Semi Auto Shotguns
    • Single Shot Shotguns
    • Side By Side Shotguns
    • Other Shotguns
  • Scopes
    • Scope Accessories & Scope Parts
    • Sight Magnifiers
    • Spotting Scopes
    • Thermal Sights
  • Pre-Owned
  • NFA/Supressor
great lakes firearms logo
  • Ammo
    • Handgun Ammunition
    • Rifle Ammunition
    • Rimfire Ammunition
    • Shotgun Shells
  • Guns
    • Combination Guns
    • Derringers
  • Handguns
    • Semi Auto Handguns
    • Single Shot Handguns
    • Revolvers
    • Other Handguns
  • Magazines
    • AK Magazines
    • Handgun Magazines
    • Rifle Magazines
    • Shotgun Magazines
  • Optics
    • Binoculars
    • Gun Scopes
    • Gun Sights
    • Laser Sights
    • Night Vision
    • Range Finders
    • Red Dots Sights
    • Sight Magnifiers
    • Spotting Scopes
    • Thermal Sights
  • Rifles
    • AR Rifles
    • AK Rifles
    • Bolt Action Rifles
    • Lever Action Rifles
    • Pump Action Rifles
    • Semi Auto Rifles
    • Single Shot Rifles
    • Other Rifles
  • Parts
    • AR Lower Parts
    • AR Lower Parts Kits
    • AR Upper Parts
    • AR15 Parts
    • Class 3 Parts & Accessories
    • Glock Parts
    • Gun Parts
    • Gun Parts Kits
    • Handgun Parts
    • Other AR15 Accessories & Parts
  • Shotguns
    • Bolt Action Shotguns
    • Lever Action Shotguns
    • Over Under Shotguns
    • Pump Action Shotguns
    • Semi Auto Shotguns
    • Single Shot Shotguns
    • Side By Side Shotguns
    • Other Shotguns
  • Scopes
    • Scope Accessories & Scope Parts
    • Sight Magnifiers
    • Spotting Scopes
    • Thermal Sights
  • Pre-Owned
  • NFA/Supressor
$0.00 0 Cart
Click to enlarge
Home Guns & Firearms Rifles AR Rifles Sig Sauer M400 Forge FDE Rifle 5.56 NATO 30rd Magazine 16″ Barrel ROMEO-MSR GEN II Adjustable Stock M-LOK Handguard
Savage 110 Carbon Hunter Rifle 350 Legend 18 in. Flat Dark Grey 4 rd.
Savage 110 Carbon Hunter Rifle 350 Legend 18 in. Flat Dark Grey 4 rd. $1,006.00
Back to products
SALVO 12 SUPPRESSOR 12 GAUGE QD MOUNT
SALVO 12 SUPPRESSOR 12 GAUGE QD MOUNT $993.65

Sig Sauer M400 Forge FDE Rifle 5.56 NATO 30rd Magazine 16″ Barrel ROMEO-MSR GEN II Adjustable Stock M-LOK Handguard

$1,099.99

Sig Sauer M400 Forge FDE Rifle 5.56 NATO 30rd Magazine 16″ Barrel ROMEO-MSR GEN II Adjustable Stock M-LOK Handguard

30 in stock

Purchase & earn 1,100 points!
Compare
Add to wishlist
SKU: ORI|73506 Category: AR Rifles Brand: SIG SAUER
Share:
  • Description
  • Additional information
  • Reviews (0)
  • Shipping & Delivery
Description

Features:

  • TriggerTech 3.5 pound two-stage flat blade duty trigger
  • 16" cold hammer forged barrel with mid-length gas system
  • ROMEO-MSR Gen II 2 MOA red dot included
  • Full-length free-floating M-LOK handguard
  • Ambidextrous charging handle
  • MAGPUL SL-K 6-Position adjustable stock

Specifications:

  • FIREARM TYPE: Rifle
  • CALIBER: 5.56 NATO
  • SIGHTS: ROMEO-MSR GEN II w/2 MOA DOT
  • BARREL LENGTH: 16 in [406.4 mm]
  • BARREL MATERIAL: Cold Hammer Forged Steel
  • TWIST RATE: 1:7
  • THREADS: 1/2 in – 28 90 Degree Shouldered
  • MUZZLE DEVICE: A2 Birdcage Flash Hider
  • ACTION TYPE: Semi-Auto
  • OPERATING SYSTEM: Mid-Length Direct Impingement
  • STOCK TYPE: 6-Position Magpul SL-K
  • GRIP TYPE: Reduced Angle
  • TRIGGER TYPE: TriggerTech 3.5-Pound 2-Stage Flat Blade
  • TRIGGER SHAPE: Flat
  • MANUAL SAFETY: Ambidextrous
  • FOREND TYPE: M-LOK FDE Cerakote
  • ACCESSORY RAIL: M-LOK/Full-Length Picatinny
  • MAG TYPE: AR-15
  • MAGS INCLUDED: (1) 30rd Polymer Mag
  • COLOR: FDE
  • RECEIVER FINISH: FDE Cerakote
  • OVERALL LENGTH: 35.5 in [901.7 mm]
  • COLLAPSED LENGTH: 32.25 in
  • OVERALL WIDTH: 2.7 in [68.58 mm]
  • HEIGHT: 9.4 in [819.15 mm]
  • WEIGHT: 6.8 lb [3084.43 kg]
Additional information
UPC

798681744190

Manufacturer

SIG SAUER

Manufacturer Part Number

RM400-556N-16B-FORGE-FDE

Reviews (0)

Reviews

There are no reviews yet.

Be the first to review “Sig Sauer M400 Forge FDE Rifle 5.56 NATO 30rd Magazine 16″ Barrel ROMEO-MSR GEN II Adjustable Stock M-LOK Handguard” Cancel reply

Your email address will not be published. Required fields are marked *

Shipping & Delivery

Related products

Sold out
Compare

DIAMONDBACK FIREARMS DB10 308WIN ODG 16″ M-LOK

AR Rifles
$864.00
DIAMONDBACK FIREARMS DB10 308WIN ODG 16" M-LOK
Add to wishlist
Purchase & earn 864 points!Read more
Quick view
Compare

POF USA PRESCOTT 6.5CM 20″ BROWN

AR Rifles
$2,187.00
POF USA PRESCOTT 6.5CM 20" BROWN
Add to wishlist
Purchase & earn 2,187 points!Add to cart
Quick view
Compare

POF USA PRESCOTT 6MMCR 22″ BLK

AR Rifles
$2,069.00
POF USA PRESCOTT 6MMCR 22" BLK
Add to wishlist
Purchase & earn 2,069 points!Add to cart
Quick view
Compare

POF USA RENEGADE+ DI 5.56REM 13″ TUNG

AR Rifles
$2,069.00
POF USA RENEGADE+ DI 5.56REM 13" TUNG
Add to wishlist
Purchase & earn 2,069 points!Add to cart
Quick view
Sold out
Compare

SEEKINS PRECISION DMR 5.56MM BLACK 16″

AR Rifles
$1,749.00
SEEKINS PRECISION DMR 5.56MM BLACK 16"
Add to wishlist
Purchase & earn 1,749 points!Read more
Quick view
Compare

SIG SAUER M400 TREAD V2 5.56MM GRN 16″

AR Rifles
$1,070.00
SIG SAUER M400 TREAD V2 5.56MM GRN 16"
Add to wishlist
Purchase & earn 1,070 points!Add to cart
Quick view
Compare

WISE ARMS WA-15B 300BLK MIDNIGHT BRZ 16″

AR Rifles
$669.00
WISE ARMS WA-15B 300BLK MIDNIGHT BRZ 16"
Add to wishlist
Purchase & earn 669 points!Add to cart
Quick view
Sold out
Compare

WISE ARMS WA-15B 300BLK SNIPER GREY 16″

AR Rifles
$669.00
WISE ARMS WA-15B 300BLK SNIPER GREY 16"
Add to wishlist
Purchase & earn 669 points!Read more
Quick view

    At Great Lakes Firearms of Porter, Indiana, our mission is to provide our customers with the finest firearms and ammunition available, while promoting responsible gun ownership and safety.

    Quick Links

    • About
    • Service
    • Shop
    • Blog
    • Contact

    Useful Link

    • Privacy Policy
    • Term Of Use
    • Returns Policy
    • Reviews

    Great Lakes Firearms

    • (219) 617-6679
    • 1355 Dune Meadows Dr,
      Porter, Indiana 46304

    Newsletter

    Copyright 2025, Great Lakes Firearms | All Rights Reserved.

    Shopping cart
    Close
    Start typing to see products you are looking for.
    Shop
    Wishlist
    0 items Cart
    My account