Results 1 to 4 of 4

Thread: RRA Lower - Mil Spec receiver extension

  1. #1
    Join Date
    Apr 2011
    Posts
    6
    Feedback Score
    0

    RRA Lower - Mil Spec receiver extension

    Can you put a mil-spec receiver extension on a RRA lower? Apparently there is a discrepancy with receiver extension diameter. The quality rifles (Colt, BCM, Daniel Defense etc.) are 1.14" dia. While the lower end rifles (RRA, Bushmaster, DPMS) use 1.17" extensions. Is this an inner dimension? Are they interchangeable or am I stuck putting a commercial extension on my lower?

  2. #2
    Join Date
    Jul 2009
    Location
    SE Tennessee
    Posts
    1,153
    Feedback Score
    22 (100%)
    Yes you can use a mil-spec RE.

  3. #3
    Join Date
    Apr 2008
    Posts
    213
    Feedback Score
    1 (100%)
    It is an outer dimension and directly impacts your stock choices.

  4. #4
    Join Date
    May 2006
    Location
    VA/OH
    Posts
    29,631
    Feedback Score
    33 (100%)
    Quote Originally Posted by Fighter13B View Post
    Can you put a mil-spec receiver extension on a RRA lower? Apparently there is a discrepancy with receiver extension diameter. The quality rifles (Colt, BCM, Daniel Defense etc.) are 1.14" dia. While the lower end rifles (RRA, Bushmaster, DPMS) use 1.17" extensions. Is this an inner dimension? Are they interchangeable or am I stuck putting a commercial extension on my lower?
    Yes, you can install a mil-spec RE onto your RRA.

    The dims are outer (read wider).



    C4

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •