VLTOR MUR Assembly?

**WS6** · 05-20-10, 22:40

How is the FA/deflector attatched to the MUR? Basically...is it solid...will it contain pressure from a case-rupture...does it wiggle...etc.

I saw a post a while back where someone was complaining about the difficulty of getting the ejection-port cover off for replacement with a laser engraved version. Is the MUR different this this respect as well from a standard upper?

ETA: I just went to their website and Vltor advertises the MUR as having Type II anodizing. Why the hell would they spend the time to make such a "strong" upper just to give it decorative anodizing? Wierd. Multi-piece beauty queen anyone? Not liking this : /

**TehLlama** · 05-21-10, 15:33

If it's a problem, the LaRue, Sun Devil, Rainier, and MEGA offerings are certainly out there - I'd go with any of those if you're concerned.

**markm** · 08-03-11, 08:52

Originally Posted by TehLlama

If it's a problem, the LaRue, Sun Devil, Rainier, and MEGA offerings are certainly out there - I'd go with any of those if you're concerned.

Those billets aren't even in the same galaxy as the MUR.

**WS6** · 08-03-11, 09:09

Originally Posted by markm

Those billets aren't even in the same galaxy as the MUR.

I presume you mean that the MUR is superior? How is it superior to the LaRue?

I presume you have no issue with the MUR holding the FA in-place with a single roll-pin, and I know you run your stuff hard.

**markm** · 08-03-11, 09:22

Originally Posted by WS6

I presume you mean that the MUR is superior? How is it superior to the LaRue?

The MUR is infinitely superior.

LaRue is surely machined well.... But it's a billet. And even the best billet will never have the strength of a forging. Plus the multi heat treatment of the MUR makes the material even better than a mil spec forging.

**WS6** · 08-03-11, 09:39

I spoke with Kino at Vltor.
Very down-to-earth, polite, knowledgeable, and honest individual.

I'm on-board with the MUR after hearing the facts about it.

**markm** · 08-03-11, 10:26

Originally Posted by WS6

I spoke with Kino at Vltor.
Very down-to-earth, polite, knowledgeable, and honest individual.

I'm on-board with the MUR after hearing the facts about it.

Yep. Once you get the facts on the MUR, you can't help but want one.

When I first saw it... I thought it was just another upper that was marketed for the something to look cool/custom crowd.

**trg42** · 05-21-10, 17:50

The assembly is dovtailed into the upper. A roll pin holds the unit from sliding out ( towards the back of the upper )

The reason someone said that it was difficult getting the ejection port covers off was because it requires you to remove the FA / deflector module . Its easy to put the pin on backwards ( like a traditional AR where the extra length goes towards the muzzle ) When you do this with a MUR the pin slides out of the hole on the left side of port cover.

I found this out the hard way !

I have no reason to doubt that it could handle pressure like a tranditional upper. Even though the module lookes relatively large, the upper reciever only has a small window that the forward assist passes through to so you have the forged reciever walls holding it together...not the forward assist / case deflector module

This module is precisely machined to fit into the upper with a dovetail. The two I have exhibit no play

See pics below

The MUR is machined from a pretty beefy forging ( current models are forgings )

Left to right we have the Sun Devil, a RRA standard flatop, Vltor. You can see the module sits ON a heavy wall forging . Top view shows how much the module protrudes

Notice the ejection cover hinge pin protrudes to the RHS on the Sun Devil ( and traditional uppers ) . The Vltor it goes the other way.