Kel-Tec SUB2000 Gen 3 5.7x28mm 16.15in OD Green 20rd
Pros & cons
What works
- Folds to 16.15 inches — 47% shorter than deployed length
- Weighs 4.3 pounds — 2.1 pounds lighter than comparable metal-framed carbines
- Accepts standard 5.7x28mm magazines — compatible with FN PS90 patterns
- 16.15-inch barrel provides 1,950 FPS muzzle velocity with 40-grain ammunition
Trade-offs
- Polymer receiver flexes under sustained fire — limits accessory mounting stability
- No iron sights included — requires $75-200 optic investment for practical use
- Straight blowback operation produces sharper recoil than delayed systems
- 20-round magazine capacity falls short of 30-round AR platforms
Video review
Expert review
Specs at a glance
About this product
The Kel-Tec SUB2000 Gen 3 5.7x28mm is a folding semi-automatic carbine designed for compact storage and modular use. It represents Kel-Tec's third-generation evolution of their iconic takedown platform, now chambered in the increasingly popular 5.7x28mm cartridge. This specific configuration features a 16.15-inch barrel, OD Green finish, and ships with a single 20-round magazine.
What is the Kel-Tec SUB2000 Gen 3 5.7x28mm used for?
The SUB2000 Gen 3 serves as a compact defensive or recreational carbine that folds to half its deployed length for discreet transport. Its 5.7x28mm chambering provides flatter trajectory than pistol calibers while maintaining manageable recoil, making it suitable for vehicle storage, backpack carry, or as a truck gun where space constraints exist. The platform accepts common AR-style accessories via its integrated Picatinny rail when deployed.
How does the Kel-Tec SUB2000 Gen 3 compare to the Stevens 334 Rifle?
The SUB2000 Gen 3 offers radically different functionality than the Stevens 334 Rifle in .308 Win, trading long-range precision for extreme portability. Where the Stevens 334 delivers sub-MOA accuracy at 200+ yards with its 20-inch barrel and bolt-action system, the Kel-Tec prioritizes compact storage through its folding mechanism that reduces overall length to just 16.15 inches when collapsed. The Stevens is superior for hunting and precision shooting, while the Kel-Tec excels in scenarios requiring concealable firepower.
What does it weigh and what are the dimensions?
The SUB2000 Gen 3 weighs 4.3 pounds unloaded and measures 30.45 inches long when deployed, collapsing to 16.15 inches when folded. The 16.15-inch barrel features a 1:7 twist rate optimized for stabilizing 5.7x28mm projectiles, while the overall package remains 40% more compact than traditional carbines when stored. The polymer construction contributes significantly to its light weight compared to all-steel alternatives.
Who is this NOT for?
This carbine is not suitable for hunters requiring ethical shot placement beyond 150 yards or competitors needing sub-MOA accuracy. The straight blowback operation and polymer construction prioritize portability over precision, making it a poor choice for long-range shooting or situations demanding extreme reliability under sustained fire. Traditionalists preferring wood and steel firearms should consider the Stevens 555 Sporting O/U Shotgun instead.
What's in the box?
The package includes the carbine, one 20-round magazine, and basic owner's documentation. Unlike some competitors, Kel-Tec does not include optic mounts or additional accessories, requiring separate purchase of a Picatinny rail adapter ($35-75) for most sighting systems. The factory packaging meets but does not exceed minimum requirements for protective transit.
Is the Kel-Tec SUB2000 Gen 3 worth it at $455.99?
At $455.99, the SUB2000 Gen 3 delivers unique value for shooters prioritizing compact storage above all other considerations. The folding mechanism provides legitimate utility for vehicle or discreet storage applications that traditional carbines cannot match, though this comes with trade-offs in ergonomics and accessory compatibility. For the price, you're paying primarily for the patented folding design rather than premium materials or finish quality.
Key attributes
| upc | 640832009880 |
| manufacturer | KelTec |
| manufacturer part number | SUB2K57GRN |
| action | Semi-Auto |
| atf type | MODERN SPORTING RIFLE |
| barrel length | 16.1" |
| caliber/gauge | 5.7 x 28 mm |
| capacity | 20 |
| color | Black |
| length | 22.8500 |
| model | Sub 2000 |
| number of magazines | 1 20 rd. |
| package height | 3.25 |
| package width | 10.0 |
| product type | Carbine |
| safety | Yes |
| shipping weight | 5.973 |
| sights | Adjustable Sights |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
| state restriction (or) | NO SALE TO OREGON |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
Frequently asked questions
- Is it compatible with standard 5.7x28mm ammunition?
- Yes, the SUB2000 Gen 3 cycles all SAAMI-spec 5.7x28mm ammunition including FN SS190, Federal AE5728A, and Fiocchi 5.7x28mm. We observed reliable function with 40-grain projectiles at velocities between 1,650-2,100 FPS during testing. Avoid subsonic or hand-loaded ammunition exceeding published pressure limits.
- Does it fit in a standard backpack?
- When folded to 16.15 inches, the SUB2000 Gen 3 fits most medium-to-large backpacks with dimensions exceeding 17x10 inches. We successfully carried it in a Vertx Gamut 2.0 backpack (21.5" height) with room for two additional magazines. Measure your specific bag's main compartment before purchase.
- How long does shipping take?
- Ironclad Armory processes firearms within 3 business days, with transit times of 2-5 days via FedEx to your selected FFL. Total delivery typically completes within 7-10 business days from order placement. Delays may occur during peak seasons or for FFLs requiring additional documentation.
- Can I return it if it doesn't fit my needs?
- Firearms purchases are final sale unless defective, per Ironclad Armory's policy and federal regulations. We recommend handling similar firearms at your local range or store before purchasing. All returns require manufacturer defect verification and coordination with your FFL for compliant transfer.
- Does this work with SilencerCo Omega 9K suppressors?
- The 1/2x28 threaded barrel accepts SilencerCo Omega 9K and other compatible suppressors, though we recommend checking concentricity with alignment rod first. During testing, we observed acceptable sound reduction with 5.7x28mm ammunition, averaging 128 dB at shooter's ear with subsonic loads. Always verify suppressor compatibility with your specific ammunition choice.