Sig Saur M400 AR 15 5.56 Cal

Description:
Overview
The Sig M400 stands out for its smooth-cycling mid-length gas system and highly accurate stainless steel barrel. While exceptionally well-built, it features proprietary handguards and a heavy factory trigger.

The Pros:

• Reliability: Cycles flawlessly with a wide variety of ammunition, showing no signs of jams over thousands of rounds.
• Barrel & Gas System: Equipped with a 16-inch 416R stainless steel barrel (1:8 twist) and a mid-length gas system that yields soft, manageable recoil and longer bolt life.
• Ambi-Controls: Features an ambidextrous safety, magazine release, and extended bolt release.
• Out-of-the-Box Value: Ships with a high-quality Magpul SL-K stock and a flared magwell for fast reloads. 

The SIG SAUER RM400 (more commonly known as the M400 TREAD) is a direct impingement AR-15 chambered in 5.56 NATO. Known for its reliability and out-of-the-box performance, it features a 16-inch stainless steel barrel, a crisp two-stage trigger, and ambidextrous controls.

Core Specifications

• Caliber: 5.56 NATO / .223 Remington
• Operating System: Mid-length, Direct Impingement
• Barrel: 16" stainless steel with a 1:8 twist rate for optimal accuracy
• Weight: ~7 lbs
• Trigger: SIG Matchlite Duo two-stage trigger
• Stock: 6-position Magpul SL-K telescoping stock 

Key Features

• Ambidextrous Controls: Includes an ambidextrous safety and magazine release.
• M-LOK Handguard: Enhanced free-floating handguard for a stable grip and easy accessory mounting.
• TREAD Ecosystem: Designed to be highly customizable, with specific TREAD-branded accessories (like foregrips, optics, and compensators) available. 

Popular Variants

• M400 TREAD V2: An upgraded iteration featuring a distinct flat-faced trigger and a robust three-prong flash hider.
• M400 CA: A feature-modified model designed specifically to comply with California state regulations without sacrificing core performance. 

Layaway: 1/3 down, 90 days
Shipping:  $70, insurance extra upon request
Payment:  Personal Check, Money Order, Cert. Check, or Zelle
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Returns without damage or alteration within 3 days of delivery, minus a 20% restocking fee 

Rifle Caliber: 5.56x45mm NATO
Manufacturer: Sig Saur
Model: M400
Serial Number: 21G000930
Barrel Length: 16
Bore Info: 1:8 twist rate
Chambers: 30rd Mag
Condition: NIB
Metal Condition: NIB
Wood Condition: N/A
Bore Condition: NIB
Barrel Type: 416R Stainless Steel
Action: Semi-Auto
Triggers: SIG Matchlite Duo two-stage trigger
Stock: 6-position Magpul SL-K telescoping stock 
Finish: Matte Black
Weight: 7lbs
Case: Factory Box

Price: $1,299.00
Shipping: $70.00
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