The Kel-Tec SUB2000 is a semi-automatic folding rifle chambered in 5.7x28mm FN with a 16.5-inch barrel. This green example is built in a state-compliant configuration and pairs a threaded muzzle with a Picatinny rail for optic mounting. It uses a 10-round magazine and includes factory iron sights for quick target acquisition. 
 

Key Specifications 

• Brand: Kel-Tec 
• Model: SUB2000 
• Caliber: 5.7x28mm 
• Action: Semi Auto 
• Capacity: 10+1 
• Barrel Length: 16.5" 
• Color: Green 
   

Detailed Features 

• Folding stock design that shortens the rifle for compact storage and transport 
• Factory iron sights included for quick target acquisition 
• Picatinny rail for mounting a red dot or other optic 
• Threaded barrel for attaching a compatible muzzle device 
• Uses SUB2000-pattern magazines in a 10-round configuration 
• Built in a state-compliant configuration for restrictive jurisdictions

The SUB2000 has a mixed but generally positive reputation among owners, most of whom like how compact it folds for storage in a truck or backpack. Some owners mention a break-in period before the action smooths out, but most report it settles in and runs reliably after that.

In 5.7x28mm, felt recoil is light, which owners like for a compact carbine that stays easy to shoot for extended range sessions. The folding stock is the standout feature for most buyers, letting the rifle stow into a much smaller footprint than a fixed-stock carbine, though a few owners note the folding mechanism takes some getting used to.

Owners generally see the SUB2000 as a good value pistol-caliber carbine, especially paired with the ability to run a red dot off the included rail. Aftermarket support for rails, optics mounts, and stocks is active given how popular the platform has become for truck guns and packable rifles.