The Kel-Tec SUB2000 Gen 3 is a semi-automatic pistol caliber carbine chambered in 10mm Auto with a 16.1-inch threaded barrel. It uses a Glock 20 magazine housing and ships with a 15-round magazine, giving it a 15+1 capacity. The matte black finish and folding format are core to the SUB2000 platform. 
 

Key Specifications 

• Brand: Kel-Tec 
• Model: SUB2000 Gen3 
• Caliber: 10mm Auto 
• Action: Semi Auto 
• Capacity: 15+1 
• Barrel Length: 16.1 in 
• Color/Finish: Black 
   

Detailed Features 

• 16.1-inch threaded barrel 
• Accepts Glock 20-style magazines 
• Glock 20 magazine housing 
• Matte black finish 
• Semi-automatic, pistol caliber carbine platform

Owners of the SUB2000 Gen 3 in 10mm tend to appreciate the magazine compatibility with Glock 20 pistols, which simplifies ammunition and magazine logistics. The threaded barrel is a consistent talking point for those running suppressor setups.

Ergonomics are functional but polarizing. The folding design is practical for transport, and the Gen 3 updates over earlier versions get positive recognition. Some find the trigger and sight picture improvements over Gen 2 meaningful; others still consider both areas weak points relative to competing carbines.

Value opinions vary. Buyers who specifically wanted 10mm in a carbine format with Glock mag compatibility find little direct competition at the price. Those coming from other PCCs occasionally flag the fit and finish as utilitarian rather than refined, though reliability reports are generally consistent.