Folding is accomplished by pulling downward on the trigger guard and swinging the barrel assembly back over the top of the rifle. The basic SUB-2000 design is implemented in a rather unusual folding design that folds for storage into half its total extended length. This design, with its long bolt travel, allows for very large functioning marginals. It has a positive disconnector, a push bolt safety that blocks the sear and disengages the trigger bar. The firing mechanism is of conventional single action type. A captive guide recoil spring with buffer actuates the bolt. The heavy two-piece steel bolt holds the firing pin, the extractor and has the operating handle on the bottom. The tubular steel stock contains the bolt and is ended by the polymer buttstock. The fore-end also has integrated the ability to house batteries and/or other small devices. The 4130 ordnance steel barrel has a spring-loaded collar to ensure an accurate lock between the receiver and the polymer fore-end and the fully adjustable front sight. The receiver also houses the firing mechanism. The bottom of the receiver forms the pistol grip, also accepting different magazines according to the version specified. The receiver rigidly attaches to the stock by multiple lugs. This block is securely locked in place by a swiveling trigger guard. The front end houses a hinge block holding the barrel and the rear sight. The receiver is made of an impact modified glass reinforced Zytel. It was designed by George Kellgren, a Swedish-American designer who also designed many earlier Husqvarna (in Sweden), Grendel, and Intratec brand firearms, including the famous TEC-9 handgun. It is available in two versions chambered for 9 mm or. The distinguishing characteristic of this rifle is that it folds in half, for storage and transportation, and its slim profile compared to other rifles. The weapon feeds from a grip-located magazine well, using magazines designed for popular models of various other manufacturers' handguns, and is an inexpensive carbine. The rifle is a blowback operated, semi-automatic firearm with its operating spring located in the tubular stock. The SUB-2000 is a pistol-caliber carbine manufactured by Kel-Tec CNC Industries of Cocoa, Florida, United States. 10- to 33-round magazines and 50 round drum. Glock, Beretta, CZ75B, Smith & Wesson and SIG Sauer pistol magazines.
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