The Kel-Tec SUB-2000 Gen 2 is a popular pistol-caliber carbine known for its compact, foldable design and adaptability to various handgun magazines. This adaptability is achieved through the use of interchangeable magazine well inserts. These inserts allow the SUB-2000 to accept magazines from a wide range of manufacturers, including Glock, Beretta, SIG Sauer, Smith & Wesson, and others. For example, a SUB-2000 configured for Glock 17 magazines can be quickly modified to accept Glock 19 or even SIG Sauer P226 magazines with a simple swap of the insert.
The ability to utilize readily available and often high-capacity handgun magazines is a significant advantage for this firearm. It simplifies logistics by allowing users to standardize ammunition and magazines with their existing pistol. This interchangeability also provides flexibility in capacity and ammunition selection based on the chosen magazine. Historically, the SUB-2000 has filled a niche for a compact, easily transported and stored firearm suitable for recreational shooting, backpacking, and home defense. The modular magazine well system enhances this versatility by catering to users with diverse handgun preferences.
