KelTec SUB-2000
A folding pistol-caliber carbine for compact storage and transport.
The KelTec SUB-2000 is a semi-automatic carbine that fires pistol cartridges and operates via blowback. Made by KelTec CNC Industries in Cocoa, Florida, it is an affordable firearm that feeds from a magazine well built into the pistol grip, accepting magazines made for various popular handguns from other manufacturers. Its most distinctive feature is that it folds in half for storage and transport, and it has a slim profile compared to other rifles.
The carbine first appeared around 1998 as the SUB-9, constructed from aircraft-grade aluminum and metal. Production of the SUB-9 ended in 2001, when the SUB-2000 replaced it.
The SUB-2000 comes in two chamberings: 9 mm and .40 S&W. Swedish-American designer George Kellgren, who also designed earlier Husqvarna, Grendel, and Intratec firearms (including the TEC-9), created it. The receiver is made from impact-modified, glass-reinforced Zytel. At the front, a hinge block holds the barrel and rear sight, locked in place by a swiveling trigger guard. The receiver attaches to the stock with multiple lugs, and its bottom forms the pistol grip, which accepts different magazines depending on the version. The receiver also houses the firing mechanism. The 4130 ordnance steel barrel has a spring-loaded collar for an accurate lock between the receiver, polymer fore-end, and fully adjustable front sight. The tubular steel stock contains the bolt and ends with a polymer buttstock. A heavy, two-piece steel bolt holds the firing pin and extractor, with the operating handle on the bottom. A captive guide recoil spring with buffer moves the bolt. The firing mechanism is a conventional single-action type with a positive disconnector and a push bolt safety that blocks the sear and disengages the trigger bar. The hardened steel ejector is internal. This design, with its long bolt travel, allows for a very large functioning margin.
The folding design works by pulling the trigger guard downward and swinging the barrel assembly back over the top of the rifle. A latch in the buttstock secures to the front sight housing, and the gun can be locked in the folded position with a key for added safety. It cannot fire when folded.
Models are available that use magazines for various semi-automatic pistols in 9mm Parabellum, .40 S&W, 5.7x28mm, and 10mm Auto.
Quick Facts
- Origin
- United States
- Is Ranged
- yes
- Designer
- George Kellgren
- Manufacturer
- KelTec
- Production Date
- 1998–2001 (SUB-9) / 2001–present
- Weight
- 4 lbs
- Length
- 16 in (closed) / 29.5 in (open)
- Part Length
- 16.1 in
- Height
- 7 in
- Cartridge
- 9×19mm / .40 S&W / 5.7x28mm / 10x25mm
- Action
- blowback operated
- Velocity
- 9×19mm NATO 1400 FPS
Facts from the source article.
Lore & Background
The carbine was introduced as the SUB-9 around 1998, which was made from aircraft-grade aluminium and metal. The SUB-9 was in production until 2001, when it was replaced by the SUB-2000. The design was created by George Kellgren, a Swedish-American designer who also designed many earlier Husqvarna (in Sweden), Grendel, and Intratec brand firearms, including the TEC-9 handgun.
The receiver is made of an impact modified glass reinforced Zytel. The front end houses a hinge block holding the barrel and the rear sight, securely locked in place by a swiveling trigger guard. The receiver rigidly attaches to the stock by multiple lugs, and its bottom forms the pistol grip, accepting different magazines according to the version specified. 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 tubular steel stock contains the bolt and is ended by the polymer buttstock. The heavy two-piece steel bolt holds the firing pin, the extractor and has the operating handle on the bottom. A captive guide recoil spring with buffer actuates the bolt. The firing mechanism is of conventional single action type with a positive disconnector and a push bolt safety that blocks the sear and disengages the trigger bar.
The basic SUB-2000 design implements an unusual folding method: pulling downward on the trigger guard allows the barrel assembly to swing back over the top of the rifle. A latch in the buttstock secures to the front sight housing, and the gun can be locked with a key in the folded position for added safety. The gun cannot be fired when folded. In July 2026, KelTec released a pistol version with a 6-inch barrel and pistol brace in 9mm called the SUB-SDP.
Reader's Guide
The SUB-2000's significance lies primarily in its compact folding design, which reduces the firearm to half its extended length for storage and transport while maintaining a slim profile. This feature, combined with its use of widely available pistol magazines from various manufacturers, made it a practical and inexpensive carbine for civilian users. The design's long bolt travel allows for very large functioning margins, contributing to reliability. The weapon's lineage traces back to the SUB-9, which was made from aircraft-grade aluminium and metal before being replaced by the polymer-receiver SUB-2000. The carbine's legacy is further extended by the later introduction of the SUB-SDP pistol variant. Its folding mechanism, which cannot be fired when folded, and the option to lock it with a key, emphasize safety during storage. The SUB-2000 remains a distinctive example of a purpose-built folding carbine that prioritizes portability and compatibility with common handgun magazines.
Did You Know?
- The SUB-2000 folds in half for storage and transport, reducing its length by about half.
- It feeds from a grip-located magazine well using magazines designed for popular models of other manufacturers' handguns.
- The operating spring is located in the tubular stock.
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