Sig Sauer M400-FORGE 5.56 NATO Semi-Auto Rifle with ROMEO-MSR Gen II Red Dot Sight

  • Item Number: RM400-556N-16B-FORGE-CON
  • /
  • View More Items by Sig Sauer
  • /
  • Condition: New
Sig Sauer M400-FORGE 5.56 NATO Semi-Auto Rifle with ROMEO-MSR Gen II Red Dot Sight

Special Promotion Items included with purchase

Buy this firearm from Vance Outdoors and receive this additional item with purchase.

This package contains (1)Sig Sauer M400-FORGE Rifle and (1)$50 Vance Gift Card

Offer valid on orders placed between Nov 2, 2026 and Nov 29, 2026. While supplies last. Combo items are void where prohibited by law. No substitutions. Vance Outdoors reserves the right to change or modify this promotion at any time.

In Stock
    $1,099.99 $1,199.99
Vance Advantage Members earn $10.99 in rewards with this purchase. Join Today
Free Scheduled In-Store Pickup
Learn More

Columbus: Limited Quantity
Hebron: Limited Quantity
Lebanon: Limited Quantity
Obetz: Limited Quantity
Springdale: Limited Quantity

In-store pickup

Ship this to me


Share this

Product Description

What's in the Box

  • SIG M400-FORGE 5.56 NATO Semi-Auto Rifle
  • (1) 30-Round Magazine
  • SIG ROMEO-MSR Gen II Red-Dot Sight
  • Cable Lock
  • Owner's Manual

The Sig M400 Forge features a TriggerTech Two-Stage Flat Blade Duty Trigger; cold hammer forged barrel with a mid-length gas system; ambidextrous charging handle; 15" M-LOK handguard; Picatinny rail and a 6 position MAGPUL SL-K Stock. Includes a ROMEO-MSR Gen II with a 2 MOA red dot.

Firearm Specifications

  • Manufacturer: Sig Sauer
  • Model: M400-FORGE
  • Caliber: 5.56 NATO
  • Barrel Length Range: 16" to 16.99"
  • Gun Platform: AR Style
  • Operating System: Gas
  • Stock Finish Group: Black
  • Capacity: 30+1
  • Stock Material: Polymer
  • Action: Semi-Auto
  • OAL: 32.25" - 35.50"
  • Sights: None
  • Barrel Finish: Black
  • Barrel Material: Cold Hammer Forged Steel
  • Twist: 1:7"
  • Receiver Description: Picatinny Rail
  • Grips: Black Polymer
  • Handguards: M-LOK
  • Optic Description: Sig ROMEO MSR Gen II
  • Optic Type: Red Dot
  • Trigger Pull Weight: 3.50 lbs
  • Height: 7.20"
  • Receiver Material: Alloy
  • Width: 2.70"
  • Stock Description: Magpul SL-K
  • Barrel Length: 16"
  • Max Capacity: 30
  • Receiver Finish: Concrete Gray Cerakote
  • Trigger: TriggerTech Two Stage
  • Weight: 6.80 lbs
  • Stock Finish: Black

Customer Comments

Customer Reviews

No reviews have been written for this product.

Write a review