KelTec SUB2000 Gen 3 5.7×28 16.15-Inch PCC

The KelTec SUB2000 Gen 3 5.7×28 16.15-Inch PCC is a lightweight semi-automatic folding carbine chambered in 5.7x28mm.

KelTec identifies the current configuration as the SUB2000 GEN3 FN, reflecting its use of an FN-pattern magazine system. The black commercial model is commonly identified as SUB2K57BLK.

KelTec SUB2000 Gen 3 5.7×28 Overview

The third-generation SUB2000 retains the folding concept that has defined the platform while introducing a redesigned rotating forend.

The forend can rotate before the rifle folds, allowing top-mounted optics to remain attached rather than interfering with the folding mechanism. Gen 3 models also feature an aluminum trigger and ambidextrous bolt hold-open control.

For additional firearm specifications and model references, browse the Gunvexa firearm reference catalog.

SUB2000 Gen 3 5.7×28 Chambering

This version is chambered in 5.7x28mm and uses a 20-round FN-pattern ProMag according to KelTec’s current factory catalog.

The 5.7 model is separate from the 9mm and 10mm GEN3 configurations, so caliber and magazine type should remain clearly identified on the product page.

16.15-Inch Barrel

KelTec specifies a 16.15-inch barrel with a 1:7 twist rate.

The barrel is factory threaded and supplied with a protective muzzle cap. Published technical references describe a round carbon-steel barrel with a black-oxide exterior finish.

Folding Gen 3 Design

The SUB2000 GEN3 measures approximately 30.45 inches with the stock extended and 29.2 inches with the stock collapsed.

When folded, the carbine measures approximately 16.15 inches, matching the barrel-length figure and creating the compact form associated with the SUB2000 family.

Rail, Stock and Controls

The Gen 3 fore-end incorporates Picatinny-style rail surfaces and M-LOK slots. The stock is adjustable, while the manual safety uses a cross-bolt-style arrangement.

KelTec’s current catalog also lists a factory trigger pull of approximately 5 pounds and an unloaded weight of approximately 4.6 pounds without a magazine.

For official operating information, see the KelTec SUB2000 GEN3 owner’s manual.

KelTec SUB2000 Gen 3 Technical Summary

Overall, the KelTec SUB2000 Gen 3 5.7×28 16.15-Inch PCC combines the established folding SUB2000 architecture with the 5.7x28mm cartridge and the revised GEN3 rotating forend.

Its principal factory specifications include a 16.15-inch 1:7-twist barrel, FN-pattern 20-round magazine, adjustable stock, optics-ready rail system, M-LOK mounting slots and approximately 16.15-inch folded length.

These characteristics clearly distinguish SUB2K57BLK from the 9mm, 10mm and previous-generation SUB2000 configurations.

SUB2000 Gen 3 Key Specifications

• Manufacturer: KelTec
• Model: SUB2000
• Generation: Gen 3 / GEN3
• Factory family designation: SUB2000 GEN3 FN
• Black model / MPN: SUB2K57BLK
• Black model UPC: 640832009873
• Platform: Folding carbine
• Action: Semi-automatic
• Caliber: 5.7x28mm
• Operating system: Blowback
• Barrel length: 16.15 inches
• Barrel material: Carbon steel
• Barrel finish: Black oxide
• Barrel profile: Round
• Twist rate: 1:7 RH
• Muzzle: Factory threaded
• Magazine pattern: FN-pattern
• Factory magazine: 20-round FN ProMag
• Common capacity notation: 20+1
• Forend: Rotating Gen 3 design
• Accessory interface: Picatinny-style rails and M-LOK
• Trigger: Aluminum Gen 3 trigger
• Factory trigger pull: Approximately 5 lb
• Bolt control: Ambidextrous bolt hold-open
• Safety: Cross-bolt style
• Stock: Adjustable polymer
• Overall length, extended: 30.45 inches
• Overall length, stock collapsed: 29.2 inches
• Folded length: 16.15 inches
• Published unloaded weight: Approximately 4.6 lb without magazine
• Primary finish: Black
• Current black identifier: SUB2K57BLK