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Sig Saur M400 AR 15 5.56 Cal Guns International #: 103666173 Seller's Inventory #: 53 Category: Sig Sauer Rifles - M400 - Sig Sauer Rifles Seller's Information When emailing or calling sellers direct, please mention that you saw their listing on GunsInternational.com Seller: randywine Company: Randolf W Fowler Ltd Member Since: 1/26/21 First Name: Randy Last Name: Fowler State: Virginia Zip: 20147 Country: United States Phone: (703) 858-2881 Premium Seller Number of Active Listings: 286 Total Number of Listings: 827 Seller: FFL Dealer Return Policy: 3 day inspection and return policy on used guns. Returns ON approval within 3 DAYS OF DELIVERY MINUS A 20% RESTOCKING FEE Payment Types Accepted: Money Orders, Certified Checks, Personal Checks, Zelle, Layaway 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 randywine2000yahoo (703) 858-2881 Returns without damage or alteration within 3 days of delivery, minus a 20% restocking fee  Price: $1,299.00 Rifle Caliber: 5.56x45mm NATO Manufacturer: Sig Saur Model: M400 Serial Number: 21G000930 Barrel Length: 16 Bore: 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