Sig Sauer M400 Coil V2 TREAD 5.56mm Semi-Auto Rifle with ROMEO5 Gen II Optic and Stainless Barrel

  • Item Number: RM400-16B-TRD-V2-COIL
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  • Condition: New
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    $1,149.99 $1,279.99
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Columbus, OH 43224

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Product Description

Whats In The Box

  • Sig Sauer MM400 Coil V2 TREAD 5.56mm Semi-Auto Rifle
  • ROMEO5 Gen II Optic
  • (1) 30-round magazine
  • Owner’s manual and warranty paperwork

The Sig Sauer M400 TREAD is a highly configurable, duty-ready AR-15 platform built for durability and ergonomic versatility. Chambered in 5.56 NATO, it pairs a 16″ stainless steel barrel and mid-length gas system with a free-floating M-LOK enhanced handguard for a rigid, accessory-friendly mounting surface. The rifle includes a SIG Matchlite 2-stage trigger and a MAGPUL SL-K 6-position stock for an adjustable, shooter-specific fit, plus ambidextrous controls and lower-receiver QD mounts for fast sling attachment.

Firearm Features

  • Romeo5 Gen II Compact Red Dot Sight
  • M-LOK Vertical Foregrip and Barricade Stop
  • 16” Stainless Steel Barrel
  • Tread Enhanced M-LOK Handguard
  • SIG 2-Stage Matchlite DUO Trigger
  • Mid-Length Direct Impingment Gas System
  • 6 Position MAGPUL SL-K Stock
  • Ambidextrous Saftey and Mag Release

Firearm Specifications

  • Make: Sig Sauer
  • Model: M400 Coil V2 TREAD
  • Caliber: 5.56 NATO
  • Barrel Length: 16" (stainless steel)
  • Overall Length: 35.75"
  • Action: Semi-Auto
  • Trigger: 2-Stage MatchLite Duo
  • Operating System: Mid-length gas system
  • Twist Rate: 1:8″
  • Thread Pattern: 1/2″-28 tpi
  • Stock Style: MAGPUL SL-K 6-position telescoping
  • Magazine Type: AR-15 pattern
  • Weight: 7.0 lbs

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