85 Jimmy Posted August 21, 2012 Report Share Posted August 21, 2012 I am about to replace my order for my UBR and read that "7.62x51 ARs may require the use of a custom short buffer and spring". I already have my extra heavy buffer and now I'm wondering if I can even use the UBR with it? The buffer measure's about 5 3/16" long and I don't know how long the UBR buffer tube is. Anyone know if the 2 will work together? Quote Link to comment Share on other sites More sharing options...
85 Jimmy Posted August 21, 2012 Author Report Share Posted August 21, 2012 Just an update, I got off the phone with magpul and they said that they know for sure the CAR-10 buffer will work with the UBR, but they are unsure on the XH buffer. I tried calling Clint at heavybuffers, but no one answered... I guess I'll try leaving him an email Quote Link to comment Share on other sites More sharing options...
carbon9 Posted August 21, 2012 Report Share Posted August 21, 2012 I just measured a carbine DPMS Pattern .308 buffer and it is about 2.5" long. This is shorter then an AR-15 carbine and rifle buffer. Sounds like you have a rifle buffer. The UBR buffer tube is the same length as an AR-15 carbine tube. If you look at the ads to the right and scroll down you will see the "Heavy Buffers" link, that's what you want/need. Quote Link to comment Share on other sites More sharing options...
85 Jimmy Posted August 21, 2012 Author Report Share Posted August 21, 2012 I just looked, mine is the rifle length buffer... :-[ I already sent Clint an email, now I'm wondering if he'll swap out the rifle length XH buffer and spring for the CAR-10 XH buffer and spring. I guess I'll find out... Quote Link to comment Share on other sites More sharing options...
Jgun Posted August 21, 2012 Report Share Posted August 21, 2012 Sounds like you have an AR .308 XH rifle buffer. On his site Clint lists the length as being 5.2" I think. For a UBR you will need either ths CAR 10 or the XH carbine buffer to work. Think of it like Rifle length buffer for PRS or other full length fixed stocks, and carbine length buffer for all collapsing stocks, as far as weight goes, thats dependant on preference and what your going to be doing with the gun. As far as the other brands, RR, etc, You need to check with Clint on that stuff. By the way, I need an XH rifle length buffer for my present build. If you decide you want to sell it PM me. Quote Link to comment Share on other sites More sharing options...
85 Jimmy Posted August 21, 2012 Author Report Share Posted August 21, 2012 By the way, I need an XH rifle length buffer for my present build. If you decide you want to sell it PM me.I'm going to check and see if Clint will just swap it out for a CAR-10 XH, if he won't I'll let you know. Quote Link to comment Share on other sites More sharing options...
blwn99x Posted August 21, 2012 Report Share Posted August 21, 2012 the car-10 buffer definately works in the UBR stock, my buddy just installed them on his 308 Quote Link to comment Share on other sites More sharing options...
Jgun Posted August 21, 2012 Report Share Posted August 21, 2012 sounds good. Quote Link to comment Share on other sites More sharing options...
85 Jimmy Posted August 22, 2012 Author Report Share Posted August 22, 2012 Alright, Clint is taking care of me. Now here's a question before I get the CAR buffer. Should I go ahead and get the XH buffer? I plan to one day have a suppressor and I know he says to use that buffer when shooting suppressed. Quote Link to comment Share on other sites More sharing options...
NoFail Posted August 24, 2012 Report Share Posted August 24, 2012 Get the XH. I'm running UBR + CAR 10-XH with the modded Armalite spring and it's just great. I don't run suppressor but if it sucks up more felt recoil then all the better. Quote Link to comment Share on other sites More sharing options...
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