Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

AR No-No

Discussion in 'Gunsmithing and Repairs' started by Kp321, Oct 30, 2012.

Thread Status:
Not open for further replies.
  1. Kp321

    Kp321 Member

    Joined:
    Jul 12, 2012
    Messages:
    987
    Location:
    West Texas
    Had to pull the barrel on a DPMS today, one of the uppers with no dust cover. Anyway, my Brownells upper vise does not fit these receivers properly. Some smiths have reported that they use a barrel vise rather than a receiver vise so I tried it. Bad idea! Instead of loosening the barrel nut, it sheared the barrel locating pin. Finally got things fixed up by minor modifications to the Brownells vise. Lessons learned, 1. Don't use barrel vise, 2. Buy DPMS receiver block.
     
  2. ApacheCoTodd

    ApacheCoTodd Member

    Joined:
    Jun 30, 2011
    Messages:
    4,606
    Location:
    Arizona
    Using proper barrel vice blocks is the original military method. When barrel, block and vice are compatible it's still a way I use 30+% of the time.

    The problems arise with varying block and barrel exterior dimensions.

    I'd say shearing that pin is indicative of a DPMS cobb-up in the assembly/manufacturing tolerances rather then a failure of the concept of un-barrelling using barrel blocks.
     
Thread Status:
Not open for further replies.

Share This Page