Description
The KRISS Vector MK1 Modular Rail is a bolt-on handguard extension built specifically for the Gen II Vector CRB. It's machined from aluminum alloy and finished in a Flat Dark Earth Cerakote coating, so it matches the Vector's look while adding the mounting space the platform is often missing from the factory. The profile follows the contour of the Vector's body, keeping that signature slim silhouette intact instead of bolting on something bulky that throws off the balance.
What the Vector MK1 Rail Brings to the Table
This rail is milled out to shave weight without giving up rigidity, which matters on a gun that already carries its mass toward the rear. It threads on the three, six, and nine o'clock surfaces so you can run accessory rails exactly where you need them. Out of the box it includes a 10-slot Picatinny rail and a 7-slot Picatinny rail, and the side rail kit comes pre-installed on the handguard, so you can get to mounting gear without hunting for parts.
Setting Up Your Gen II Vector CRB
Installation is straightforward since the MK1 mounts directly to the body of the Vector using the four included M4x0.7 screws. Once it's on, you've got room for a weapon light, a vertical or angled foregrip, a laser, or a bipod depending on how you run the gun at the range. If you've been wishing your Vector had more hand real estate and a cleaner way to hang accessories, this is the piece that fills that gap.
One thing worth knowing up front: this rail is designed for the Gen II and Gen 2.1 Vector CRB and is built around the 16-inch carbine. It will not fit Gen 1 models because of their integrated flashlight mount, so make sure you know which generation you're working with before ordering. For the right Vector, though, it's one of the cleaner ways to open up your setup.
Key Specifications
- Manufacturer: Kriss USA
- Model: Vector MK1 Modular Rail
- Manufacturer Part Number: KVA-VMRFD01
- UPC: 810237027486
- Product Type: Handguard Extension / Forend
- Color: Flat Dark Earth
- Finish: Cerakote / Hard Anodized
- Material: Aluminum Alloy
- Fitment: Gen II / Gen 2.1 Vector CRB (16-inch)
- Mounting Surfaces: 3, 6, and 9 o'clock threaded
- Overall Length: 8.375 in / 213 mm
- Overall Width: 2 in / 50.8 mm
- Internal Width: 1.72 in / 43.7 mm
- Internal Height: 2.625 in / 66.7 mm
- Weight: 8 oz / 226.7 g
What’s Included
- KRISS Vector MK1 Modular Rail (FDE)
- One 10-slot Picatinny rail
- One 7-slot Picatinny rail (pre-installed side rail kit)
- Four M4x0.7 mounting screws
Frequently Asked Questions
Will the Vector MK1 Modular Rail fit my Gen 1 KRISS Vector?
No, this rail is built for the Gen II and Gen 2.1 Vector CRB only. It will not fit Gen 1 Vectors because those models have an integrated flashlight mount that gets in the way. Check which generation you have before ordering.
What accessories can I mount on the MK1 Modular Rail?
The threaded 3, 6, and 9 o'clock surfaces and included Picatinny rail sections let you mount weapon lights, lasers, foregrips, and bipods. It gives you the accessory real estate the factory Vector handguard tends to lack. Additional accessory rails are available separately if you want to fill out every position.
Does the KRISS Vector MK1 rail come with the Picatinny rails, or do I buy those separately?
The kit ships with a 10-slot Picatinny rail and a 7-slot Picatinny rail, plus four M4x0.7 mounting screws. The side rail kit comes pre-installed on the handguard, so you can start mounting gear right away without sourcing extra parts.
Is the MK1 Modular Rail heavy, and will it change how the Vector handles?
It's machined from aluminum alloy and milled out to keep weight down, coming in right around 8 ounces. The shape follows the Vector's existing form factor, so it keeps that slim profile and won't dramatically shift the balance of the gun.





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