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  Sig Sauer M400 Enhanced .223 / 5.56
Sig Sauer M400 Enhanced .223 / 5.56
Sig Sauer M400 Enhanced

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Availability: Currently Out of Stock
Product Code: RM400-16B-EC

Description Additional Information
Low prices on the SIG SAUER M400 Enhanced w/ Magpul .223/5.56 start at Champion Firearms-

To Hell and Back Reliability. SIG SAUER is a brand synonymous
with quality firearms. Inheriting a legacy of unparalleled Swiss + German craftsmanship and engineering, the M400 is an AR-15 carbine that SIG SAUER initially developed for law enforcement, but has subsequently taken the civilian market by storm.

The rifle has certainly raised a few eyebrows since it employs a traditional direct gas impingement system, where SIG gained an international reputation as a small arm manufacturing juggernaut building advanced gas piston platforms. The move was easy to understand when you actually stop to consider that the dominant weapons system in this county is direct gas impingement, and SIG has been in negotiations with several U.S. agencies regarding the M400.

As mentioned, at the heart of the SIG SAUER M400 Enhanced design lies a direct gas impingement system. It has the benefit of less moving parts, less weight, significantly less expense and typically greater accuracy. The M400 Enhanced is a civilian legal M4 with a few minor upgrades built into the lower receiver.

An ambidextrous magazine release works flawlessly from either side, while still leaving the normal right handed configuration and feel intact. A pair of quick detach sling mount adapters are milled into each side of the lower receiver. The Magpul MOE six position telescoping buttstock is standard M4 and mounted to a commercial diameter receiver extension. A 7075-T6 aircraft grade aluminum forged lower receiver brings durability and reliability to the equation.

Located underneath the rear takedown pin lug, a tensioning detent applies pressure to the upper receiver, thereby eliminating receiver wobble. Metal relief is evident in the lower receivers magazine well, which provides faster reloading. An ergonomic Magpul MOE pistol grip is included with the package, but can be retrofitted with any number of popular replacement options available on the market.

For iron sights, the flat top upper receiver is home to a rear flip-up Magpul BUIS adjustable sight, where the front sight post is the standard pattern elevation adjustable A2. The upper receiver is equipped with a standard Picatinny rail for attaching optics. Lowered, flared and polished M4 feed ramps have been cut into the upper to ensure reliable feeding.

The bolt carrier has been chrome lined for maximum wear and corrosion resistance, while great care has been taken to ensure the carrier key is staked properly to ensure reliable gas flow. Standard upper features also include a brass deflector, ejection port cover and forward assist assembly. A small protrusion inside the barrel extension supports the extractor body when the rifle is fired, relieving stress on the extractor pin should there ever be a cartridge over-pressure issue.

The 16- inch nitride treated barrel has been chromed lined for improved reliability and corrosion resistance. With a barrel twist rate of 1:7", the rifle is capable of stabilizing heavy bullets such as .223REM 75- grain match ammo, while equally at home firing standard 55- grain 5.56mm ball. The barrel profile is close to that of the M4, with additional metal removed forward of the gas block.

An A2 flash hider is attached via 1/2-28 t.p.i. found at the muzzle. The carbine length gas system is fed through a standard assembly gas block. The SIG SAUER M400 Enhanced has carbine length Magpul MOE handguards that provide improved handling and contain two metal inserts, providing shielding and heat dissipation. For those who prefer weak hand support below the delta ring, there are four vertical grooves on the front of the magazine well.

To provide maximum protection against wear or rust, the lower receiver has been hard coat anodized, while all other parts wear a tough mil-spec manganese phosphate finish. Weighing in at 6.7 pounds, the rifle accepts standard AR-15 magazines. For service or repair, it is backed by a limited lifetime warranty. Overall, the SIG SAUER M400 Enhanced is an innovative, rugged and reliable M4 rifle designed for years of reliable service.
Caliber: .223 / 5.56
Mode of Operation: Semi- Automatic
Operating System: Direct Gas Impingement
Lower Receiver:7075-T6 Forged Aluminum
Magazine: (1) 30- Round MAGPUL Included...Standard M-16 / AR-15
Barrel: 16" Chrome Lined
Brake: A2 Birdcage
Buttstock: 6- Position Collapsible MAGPUL MOE
Sights: MAGPUL Rear Flip- Up, Fixed A2 Front
Finish: Hard Anodized Black (Aluminum Components) & Manganese Phosphate (Steel Parts)
Barrel Twist: 1-in-7"
Weight of Rifle: 6.7lbs.
Trigger Weight: 7.6lbs.
Warranty: Lifetime

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