Kel-Tec SUB2000 CQB Multi-Mag 9mm Integrally Suppressed Folding Carbine, 16.25" Barrel, 17+1, Black – NFA Item
This factory SUB2000 CQB is Kel-Tec’s integrally suppressed, Multi-Mag 9mm variant that folds for compact storage. It features a 4.25" rifled barrel housed inside the integral suppressor assembly that brings the overall barrel length to 16.25". The receiver accepts multiple handgun magazine patterns, and this example is configured for S&W M&P 9mm mags. It ships in the Kel-Tec hard case and includes a 17-round magazine.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The forend locking latch is loose, so the barrel does not lock into place. This requires repair or replacement by a qualified gunsmith before any firing is attempted.
What's Included
- Kel-Tec factory hard case
- One 17-round steel double-stack magazine configured for S&W M&P 9mm pattern (per case label "SUB CQB MP")
This CQB configuration is a factory integrally suppressed NFA item. The rifled portion is 4.25", permanently contained within the baffle stack to achieve a 16.25" overall barrel length. It retains the SUB2000’s folding design, collapsing to approximately 16.25" overall length for storage and transport.
The Multi-Mag receiver is designed to accept different handgun magazine patterns, enhancing versatility across setups. This carbine is currently set up for S&W M&P 9mm magazines and includes a 17-round example.
Controls and furniture are purpose-built: a reciprocating charging handle located under the tube, a length-adjustable skeletonized stock, and a textured polymer pistol grip. A steel receiver tube paired with a polymer grip/frame and black finish keeps weight manageable at approximately 5.15 lb unloaded.
Accessory mounting is straightforward, with a full-length 12 o’clock Picatinny rail over the suppressor housing and a 6 o’clock accessory rail segment. The suppressor shroud carries heat-warning markings, and the receiver tube and integral suppressor module bear separate serial numbers. Made in the USA.

