Vltor VIS?

[TREE]

Greetings all,

Anyone here have a time-frame for the release of the midlength VIS?

[VLTOR]

Wow, Vltor's first post!

Regarding the VIS,
We're currently finishing the first batch of Carbine length VISs. We're halfway through our first batch of Mid-length VISs. Unfortunately, we're still a few weeks out before the Mid-lengths hit the market.

For those that are unaware of it, we're making a precision upper receiver with the same features found on the VIS upper receiver. We're performing the final machine operation on these uppers. We hope to start shipping in the next week or two.

We appreciate the interest.

Eric

P.S. Congrats to M4Carbine.com! I wish success and many threads in years to come.

[Impact]

thanks for the update !!

[Yojimbo]

Eric,

Nice to see Vltor here!

I'm very interested in the mid-length VIS. Would you mind describing how exactly a barrel is installed on the VIS?

I know it uses a special barrel nut and wrench but I always wondered how it was done.

Thanks!

[VLTOR]

Yojimbo-

Thanks for the warm welcome.

The barrel nut works in the same principal to that of the original.

Each VIS kit is supplied with a special spanner wrench, made to fit 1/2-inch drive torque wrench. Unfortunately, the area to operate the wrench allows quarter rotation only.

The barrel wrench is intended for a short service life, 10 (plus or minus) barrel installations. Eventually, we'll offer an armor's wrench, which will have a much longer service life.

If you're wondering, the barrel assembly can be removed/installed with the gas-tube in place. It's quite easy to change out a barrel, but I would not consider it as a "quick change" system.

All in all, the VIS is similar in every respect to a standard AR upper, but just more rigid.

Eric

[K.L. Davis]

FWIW

When I had a VIS system for the upper receiver flex test I was impressed with how easy it was to change out the barrel -- as Vltor says, the gas tube does not have to be removed, it is really as simple as pull the bottom piece on the handguard, remove the barrel nut, pull the old barrel out, reverse these steps.

They may not bill it as a "quick change" barrel, but it is one of those "takes longer to get the tools together than it does to do the job" things.

[CapnCrunch]

Eric, long time no see! I'm great about calling people back, ain't I Just wanted to say I'm looking forward to both the VIS monolithic units as well as the uppers.

Did you guys ever get a definate weight on the VIS-1 or VIS-2? Inquiring weight watchers everywhere are frothing at the mouth at the possibilities.

The profiling of the upper in the SR25-esque fashion looks like it will add much needed rigidity to the unit, and it's yet another VLTOR product that's on my "gotta have" list.

-Tally

[Yojimbo]

Eric,

Thanks for the details. The main concern I had was about the 1/4 trun of space you mentioned that was availble when tightening the barrel nut. I was thinking it would hard to get the get the needed leverage to tighten the nut down properly. Apparently it's not an issue.

BTW, what type of receiver block do you use when installing the barrel? Also, is it correct to assume that while VIS is put in the vise upside down during the barrel install process?

[C4IGrant]

Thanks for the update Eric. I must say that it is nice to see a manufacturer taking the time to answer questions. It is even nicer to see them do it under their REAL NAME!


C4

[VLTOR]

Grant-
It's great to work one on one with customers, end-users and operators. I (personally) will stay in contact with M4C.NETers until I find an employee to oversee public relations and assist in sales. Until then, you're stuck with me.

Captain-
I've always like the outer profile of the SR25 upper receiver. Stoner designed the upper’s shape to ease or lessen manufacturing cost. Every surface of the VIS upper is machined. We profiled it for strength and style.

Yojimbo-
Seeing that we re-shaped the receivers profile, most "clam shell" type receiver clamps will not be useful with the VIS. I figured out a couple ways to secure the receiver, to install the barrel nut.

Shown below are two example; one being the "sandwich" method (aluminum and/or nylon blocks compressing the upper receiver in the vise. To support the inner bore of the upper receiver, I use the bore support, normally used with the "clam shell" type receiver clamp). The second method is by internal support. I used the DPMS's "Receiver Claw", which supports the receiver’s internal bore, lessening the chance of twisting. You’ll notice that I mounted the claw up side down to access the barrel nut. Maybe in the future we’ll have a clam shell type clamp of our own.