Page 3 of 3 FirstFirst 123
Results 21 to 25 of 25

Thread: Zeroed my new Colt SOCOM barreled upper...

  1. #21
    Join Date
    Apr 2007
    Location
    NoDak
    Posts
    487
    Feedback Score
    1 (100%)
    Just out of curiosity, what were you using for the install? Reaction Rod, BEV or a clam shell type receiver block?

  2. #22
    Join Date
    Nov 2012
    Posts
    1,683
    Feedback Score
    41 (100%)
    Quote Originally Posted by Rifleman_04 View Post
    Just out of curiosity, what were you using for the install? Reaction Rod, BEV or a clam shell type receiver block?
    I used a DPMS upper receiver fixture, as that is what Mega recommends in their instructions for their Maten uppers. I had a clamshell style fixture years ago, but I found it was rather flimsy. I may invest in a reaction rod in the future, but I'm kind of done building rifles for a while.

  3. #23
    Join Date
    Oct 2012
    Location
    Marietta Georgia
    Posts
    593
    Feedback Score
    17 (100%)
    I've used a clamshell for years never found it to be an issue that caused sights to be out of whack. Same for using barrel blocks when installing and removing muzzle devices. Any time they were skewed, it was due to the pinned fsb, or oos upper.
    Last edited by misfit47; 05-19-18 at 23:22.

  4. #24
    Join Date
    Apr 2007
    Location
    NoDak
    Posts
    487
    Feedback Score
    1 (100%)
    Ive also had no issue with the clam shell type but the reason I brought that up is I have seen the reaction rod type twist the upper especially if they require more torque to get the barrel nut and gas tube hole aligned. From the few I have looked at it appears to put too much pressure on the indexing pin and either stretches the slot on the upper or twists the upper at the threads and causes the sights to zero to the extreme right.

  5. #25
    Join Date
    Nov 2012
    Posts
    1,683
    Feedback Score
    41 (100%)
    I got my upper back from Colt today, and as far as I can tell the front sight was canted. I unpacked my upper from the box they sent it in, and found an invoice which simply stated front sight canted. No other notes or explanation was provided. I called Colt customer service for more details, as I wanted to know if they adjusted the front sight base, or replaced the barrel assembly. The phone rep stated that he could not address my questions, as they do not have a way to track the gunsmiths notes electronically. To get an answer, he would have to walk back to the shop and ask in person. However, he stated he couldn't do that at the moment, as he was the only person answering phones at the time. He offered to talk to the gunsmiths Monday morning before his shift, and call me back once he found out anything. So as far as I can tell it was a canted from sight base, but as to what was done to fix it, I don't know.

Page 3 of 3 FirstFirst 123

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
  •