Was: From: $574.95
Was: From: $459.95
Was: From: $549.95
VLTOR VIS-KM Polylithic Upper Receiver Assembly w/ KeyMod
The VIS (Versatile Interface Structure) is a “polylithic” upper receiver assembly, in which the upper receiver and handguard have been permanently fused into a single, aggregate part. This design provides greatly improved structural strength and repeatable accuracy. The handguard is unable to twist or flex in relation to the receiver, and there is no gap present between the components. The VIS affords the user the benefits of a free-floating barrel, and solid-railed forend.
This VIS upper accepts all standard AR15/M4 barrels. No proprietary barrel assemblies are required, as they are with many of the other one-piece/monolithic upper assemblies on the market. The lower panel of the handguard features a very effective heat shield. The lower panel is completely removable by way of two cam latches. The panel comes off to give you access to the barrel and barrel nut for installation and maintenance purposes. The VIS can also be used with the lower panel removed to accommodate an underslung grenade launcher.
ACTUAL HANDGUARD LENGTHS:
VIS-KM7: 7 5/16″
VIS-KM9: 9 1/4″
VIS-KM10: 10 3/8″
VIS-KM12: 12 5/8″
VIS-KM14: 14 1/4″
1. Will a standard barrel nut work?
No. You do have to use the provided barrel nut and “one-time use wrench”
2. Do you sell an armorers version of the VIS wrench?
We do not. Our VIS wrenches are meant for one barrel installation. You can purchase additional VIS nuts and wrenches separately.
3. What kind of mounting block should I use?
We recommend that you use the Geissele Reaction Rod for installation. Damage could occcur if you use clamp-style mounting blocks or blocks that do not support the upper internally. This could void your warranty.
4. How do you remove the forward assist to install a custom dust cover?
Due to our Lifetime Warranty, we advise that you not remove or attempt to remove your forward assist. Our Lifetime Warranty covers all of our products as long as they are not modified in any way (i.e. disassembly, Cerakote, painted, Durakote, etc.). We do offer a service in house that will maintain your Lifetime Warranty. Please contact us to arrange this service.
The VIS is supplied as a one-piece upper receiver and handguard assembly ONLY (a VIS barrel nut and all necessary installation hardware is also included). However, there is NO barrel, charging handle, BUIS, or any other components included.
Many of VLTOR’s products are export controlled by the International Traffic in Arms Regulations (ITAR). Shipments from VLTOR may contain products controlled by the U.S. DoS or the U.S. DoC. Export of such items may not be done without prior approval from the U.S. Government and VLTOR.