The Modular Upper Receiver (MUR) is a rigid MilSpec flat-top upper receiver made to fit all AR15/M16/M4 rifles and carbines. The MUR was developed to give the customer a MilSpec correct upper receiver with a thicker wall, making the MUR upper receiver a stronger platform. This more rigid upper receiver will increase accuracy and reliability, while extending the life of the interfacing components, such as the bolt carrier group and barrel assembly.
The main benefit of the MUR is that it is dimensionally correct. Vltor ensures reliability and accuracy of our production process by using precision machining equipment, thorough quality control inspections, and a 100% final check of all critical dimensions. When you own a Vltor MUR, you have the highest quality upper receiver available on the market today.
The MUR is made from a 7075 aircraft-grade aluminum forging. Prior to machining, the forging is fully stress relieved, heat treated, aged twice and undergoes a proprietary cryogenic treatment. The MUR is precision machined and each part finished by hand. There is not a better upper receiver available.
The MUR comes in two models: one with a Bolt-Assist/Shell-Deflector and the second with a Shell Deflector only. Vltor offers the selection at the time of purchase, but does not offer a service to exchange the Bolt Assist or Shell Deflector. All MURs feature a MilStd-1913 scope mounting rail and come equipped with an Ejection-Port, Dust Cover Door.
Posted by Unknown on 14th Apr 2014
Excellent workmanship, well finished, this is the gold standard upper.
Posted by Jarhead on 12th May 2012
Im unbelievably impressed with this upper. Unique design, outstanding performance & fit, well thought out upper! I am a very picky consumer and I firmly believe in quality and this upper has it all. I even went as far as running it over with my HD 3500 and it wanted more! I cant say enough about VLTOR products. You get what you pay for. This is my second "complete" VLTOR build and couldn't be happier. There are some people that say Im crazy for spending that kind of $ on a build and that they could build 2 AR's for the price of my 1. But there the ones fixing there guns at the range why Im out there Kick'n A__!!!
Posted by Ken on 15th Jun 2011
Fit and finish was perfect. Will be used on a full blown AR project gun. You cant go wrong with this upper.
Posted by John on 7th Oct 2010
Matched perfectly with my noveske lower! Couldn't ask for better fit, finish, and Quality.Perfect match for my MK12 MOD0.
I would recommend it to everyone and will be purchasing another!
Posted by Walter on 22nd Sep 2010
JUst like Darth Vader once said: "Impressive. Very Impressive!"
It's a great match to my 6.8 SPC barrel and JD lower.
Perfect, form, fit, and function.
Posted by Davd Jacks on 1st Jul 2010
One of the best uppers, if not the best upper out there in relation to strength,fit,finish,and it mates up perfectly to my Daniel Defense lower.
Posted by Michael Frangoudakis on 4th Jun 2010
Fit my Spikes Tactical lower really well. Nice snug fit without being too tight. Very nice finish indise and out.