VIS FUSION – Lightweight Polylithic Upper w/ KeyMod

VIS FUSION - Lightweight Polylithic Upper w/ KeyMod

VIS FUSION – Lightweight Polylithic Upper w/ KeyMod
(2 customer reviews)

From: $505.95

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VIS FUSION – Lightweight Polylithic Upper w/ KeyMod

The VLTOR VIS Fusion is a new version of the very successful VIS polylithic upper receiver series. The VIS Fusion differs from the features of the original VLTOR VIS series because the lower handguard portion of the forend is not removable. The upper instead features a one-piece forend with an access panel towards the rear, allowing for accessibility to the barrel nut for installation, disassembly, and maintenance. The VLTOR VIS Fusion affords the end-user the strength and reliability that has become customary with VLTOR VIS uppers, while providing the advantage of decreased weight.

The VLTOR VIS Fusion uppers are polylithic in design. The handguard portion is permanently fused to the upper receiver, which results in a solid one-piece design.


  • Hard coat anodized, black per MIL-A-8625 Type III Class 2
  • 6013 forged upper with 6061 extruded handguard, hardened to T6 specifications
  • One-piece handguard design
  • Access panel for assembly, disassembly, and maintenace
  • Compatible with most Mil-Spec AR-15 parts and most KeyMod mounted accessories
  • Available in shell deflector only or forward assist models


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. Will the Noveske KX3 fit underneath the handguard? Will a suppressor fit?
The Noveske KX3 and KX5 will fit underneath the VIS Fusion’s handguard. Unfortunately, a suppressor will not fit.

4. 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.

5. 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.

6. What is included with the VIS Upper Receiver?
Included with the VIS Upper receiver is the VIS Barrel nut, and the VIS barrel wrench.


Export Control:
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.




Customer Reviews

2 reviews for VIS FUSION – Lightweight Polylithic Upper w/ KeyMod

  1. Neil

    As an avid 3gunner, I have been running and abusing this upper for 3 years now and it is absolutely brilliant! Rifle holds zero and takes a beating! I ran a red-dot on it for a year and then mounted a scope for the past two years. Since upper and hand guard are essentially one-piece, I have complete flexibility and can move scope as far forward as I like, with no issues compared to traditional upper/hand guard design.

  2. Louis Fusco (verified owner)

    Have owned and operated a Helicopter Business for 30 yrs and I have seen some fine Machine work. The Machine work on the VIS upper is the best I have seen on all the different Monolithic Uppers I have tried. Barrel extension fit is superb. Weight is light and the slim Handgauurd feels great. The extra rigidity of the VIS helps with accuracy. Average day is around 0.3 MOA with the Proof 22 Nosler Barrel and Handloads. Did not know about Vlitor when I bought my first VIS, very glad I tried them out. Vlitor Cust Service is second to none. Now have 4 VIS uppers THANK YOU VLITOR for a Fine Product.

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