SIG MPX

SIG MPX History

A company known worldwide for its superb semi-automatic pistols and rifles, SIG-Sauer made quite a splash with the introduction of the SIG MPX series of automatic weapons. Due to its inherent modular design approach, this type can do the job of a submachine gun, submachine gun and carbine.

Full tactical accessory support and the robustness and reliability of the SIG Sauer brand tag make the MPX a strong contender in the rimfire market - usually dominated by AR-15 clones and the German Heckler & Koch HK MP5 series of automatic weapons.

The weapon is considered the first of its kind to feature a fully enclosed rotating bolt and artillery system to improve overall operational safety and reliability.

Four main models are sold: MPX (standard), MPX-K (compact), MPX-P (submachine gun), MPX-SD (suppressed model), MPX-PSB (submachine gun) and MPX Carbine (assault carbine) form). All are housed in the 9x19mm Parabellum, although some are limited to SAFO (semi-automatic fire only).

Weight varies between brands, as does size and type of stock installed.

The grip features an ambidextrous AR-style control scheme (selector and magazine release) to support left- and right-handed shooters. The action features a bolt hold to indicate the last shot, and the bolt trigger has ambidextrous design qualities. Additionally, the rotating bolt system locks and shuts completely to prevent bullet clogging or water entering the barrel. The internal short-stroke GBB is designed to reduce inherent recoil and general dirt from repeated shots.

The magazine well is beveled and flared for easy reloading for "visible" operation. Picatinny rail sections are mounted below the length of the receiver and handguard, below the handguard and on the side of the handguard to attach various tactical accessories - optics above, foregrip/torch/sight below, and along the sides of any other supporting product.

For further customization, the operator can reconfigure the barrel length and stock in the field.

Optional features include curved detachable 10-, 20- and 30-round magazines and an integrated QD mount ring. The stock can be removed for a shorter overall profile, or a telescoping version can be installed in its place. Additionally, a folding stock is provided for a "more realistic" tactical look. The handguards have adjustable rail sections in aluminum or carbon fiber construction.

The upper receiver is one piece (molded from a large block) on a free-floating barrel and has a full M1913 rail as part of its design. The barrel length is adjustable to 4.5", 6.5" and 8" lengths.

It is planned that MPX will eventually offer .357SIG and .40 S&W chambers via aftermarket conversion kits.

Specification

Roles

Dimensions

Performance

Changes