The Kel-Tec SUB2000 is a folding semi-automatic carbine chambered in 5.7x28mm FN with a 16.5-inch barrel. It folds in half at the receiver for compact storage and transport, then unfolds and locks back into a full-length rifle for use. The carbine comes in a Tan finish, ships with iron sights, and has a top rail for mounting an optic. A magazine holding 10 rounds feeds the action. 
 

Key Specifications 

• Brand: Kel-Tec 
• Model: SUB2000 
• Caliber: 5.7x28mm FN 
• Action: Semi Auto 
• Capacity: 10 
• Barrel Length: 16.5 in 
• Finish: Tan 
   

Detailed Features 

• Folding SUB2000 platform collapses to roughly half its length for easier transport and storage 
• 16.5-inch barrel chambered in 5.7x28mm FN for flat-shooting, lightweight carbine performance 
• Iron sights included, with a top rail for adding an optic 
• Manual safety lever for positive control 
• Tan finish over the polymer housing for a distinct factory look 
• Magazine capacity of 10 rounds in this configuration

The SUB2000 has a following built almost entirely around its folding design, and owners consistently say the ability to fold the rifle in half and stash it in a bag or under a seat is the main reason they bought it. Build quality gets mixed reviews for a budget-friendly polymer carbine: some owners report years of reliable function, while others mention needing to break the rifle in or adjust the folding latch before it runs smoothly.

In 5.7x28mm FN, the SUB2000 draws interest from owners who already run a pistol in that chambering and want a carbine-length companion with less recoil than a typical rifle round. The iron sights are functional but basic, and most owners plan to add an optic to the top rail fairly quickly.

On value, the SUB2000 is generally seen as an affordable way into a folding carbine, and the light weight makes it easy to carry for extended periods. The tradeoff some owners cite is a lighter, more utilitarian feel compared to metal-framed carbines, along with a learning curve on unfolding and locking the rifle into position.