So, I bought a Magpul UBR stock from a member here after handling one at a gun show a few weeks ago. The gun show UBR must have been a knock off or maybe a PTS model (at $215) as I remember it being a lot lighter than the one I just got.
Anyway, anyone that uses one have any problems with the tube coming loose from the reciever? I guess checking it after using isnt a big deal, just wanted some real world feedback. Any other issues? Its either going on my 14.5 mid length or pending SBR. Thanks for any info.
I love mine and would recommend them to anyone looking for a rock solid stock. I did have the nut/screw work loose, but some green loctite fixed that right up.
The only way the rifle style receiver extension comes lose is if it’s not torqued to be mil-spec of 35-39ft lbs. I’ve seen people “build their own lower” and only put it hand tight and have it loosen with hard use.
Threw off the balance of my SR15 with M600C and H1. The only way to ‘rebalance’ the rifle was if I added the Magpul AFG1.
It would be a suitable replacement for say an A2 stock IMO. Especially if you are looking for that much strength.
I have one on my 14.5" BCM Middy and love it. It’s rock solid. The only negative that I see for me is the weight. It is heavy. I have a 10.5" SBR coming and as soon as I get my approvals I’m going to swap out the present stock for a UBR.
I’ve had my UBR for about 2 years, Never had one problem with it coming loose. If you have any doubt…just lock tight the ext. tube on. All in all I believe the UBR is one of the best stocks offered.
Don’t be afraid mate, they are not really heavy at all. An ACS weighs 1.14lbs a UBR weighs 1.63lbs less than 8oz delta.
So for a rifle with a longer barrel or rail or optic, the UBR can actually make the carbine feel better balanced. Everybody that has seen my rifles comments about how they thought they would be heavy, but is surprised by the great balance when they shoot them.
Weight is the only beef I have with the UBR. It is a fantastic stock otherwise. It would be pretty awesome if Magpul could trim half a pound off the thing and let it mount on standard receiver extensions (think lightweight UBR + Vltor A5 buffer system).
I read the manual and did see where it said to not use a thread locker. I have a tube of the Shell grease and an armorers tool, just need a torque wrench…off to Lowes:D
Thread locker on aluminum threads will make it difficult to remove later. I find that a little thread lube and proper torque followed up with torquing again once or twice after a couple three hundred rounds works well. (Don’t loosen then re-torque, just torque)
I wonder if we should tell the Noveske Shooting Team to take their PRS stock off that are a third of a pound heavier than the UBR!! How could they possibly be competitive with such heavy stocks on AR15s!!!??!?! My God, don’t they know 3 Gun competitions are about speed and accuracy?!?!?!
Damn these guys and their slow and heavy rifles! You would think they should know better! :nono:
Look at the ludicrous caption under this pic!!!
7. The author’s 17-inch MSTN Comp-Tac upper is light and fast; here Smith hammers a pair of 25-yard targets through the TA11 ACOG.
Unfortunately the overly cited and incorrect torque specifications that was listed in an older military manual caused a huge proliferation of misinformation on torque specs that was passed around as gospel, especially on the www. So often inch lbs was substituted for foot lbs on torque specs which reflected as hand tight receiver extensions, failures and I believe led to the preaching of using red loctite on the extensions when a correct application of torque and staking on carbines as an example would be correct.
Having said that, I have only 2 UBR’s. They are built like tanks, but heavy like a tank also. Understanding our uses for our weapons is a must. As the photo’s above indicate, weight may not be as much of an issue under certain circumstances where our stages of fire might be very brief, but humping a rifle around for hours on end and weight, any weight no matter your balance point, can be burdensome.
