Let's talk regular CAR-10 buffer vs. CAR-10 XH *post 8*

[85 Jimmy]

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?

[85 Jimmy]

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

[carbon9]

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.

[85 Jimmy]

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...

[Jgun]

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.

[85 Jimmy]

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.

[blwn99x]

the car-10 buffer definately works in the UBR stock, my buddy just installed them on his 308

[Jgun]

sounds good.

[85 Jimmy]

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.

[NoFail]

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.