Page 3 of 4 FirstFirst 1234 LastLast
Results 21 to 30 of 31

Thread: Bolt won't turn into barrel extension.

  1. #21
    Join Date
    Nov 2010
    Location
    MI
    Posts
    3,503
    Feedback Score
    22 (100%)
    You guys are basically saying the same thing.

    In a properly made barrel, there should be plenty of clearance for the bolt lugs to turn.

    This barrel has either a bad extension or bad barrel machining.

    Either way it needs to be sent back for a replacement or a refund.
    Black River Tactical
    BRT OPTIMUM Hammer Forged Chrome Lined Barrels - 11.5", 12.5", 14.5", 16"
    BRT EZTUNE Preset Gas Tubes - PISTOL, CAR, MID, RIFLE
    BRT Bolt Carrier Groups M4A1, M16 CHROME
    BRT Covert Comps 5.56, 6X, 7.62

  2. #22
    Join Date
    Jan 2008
    Location
    Roaming
    Posts
    889
    Feedback Score
    0
    Quote Originally Posted by Clint View Post
    You guys are basically saying the same thing.

    In a properly made barrel, there should be plenty of clearance for the bolt lugs to turn.

    This barrel has either a bad extension or bad barrel machining.

    Either way it needs to be sent back for a replacement or a refund.
    Yes I think I said that earlier also, not sure why he wants to argue over .002" and tell me how to measure extensions. He is going off drawings he found on the web and I'm using numbers I programmed the CNCs to and actually measured. ETA- All 4 parts have tolerances including headspace and that changes the stickout of the go gauge/cartridge which changes location of the bolt front within the ext lug to breech area.
    Last edited by constructor; 07-31-23 at 11:40.

  3. #23
    Join Date
    Aug 2011
    Location
    N.E. OH
    Posts
    7,516
    Feedback Score
    0
    So lysander says spec is .283-.289"
    Constructor was aiming for .287" which is actually on the high side of mid spec. So if constructor is +/- .002" hes withi. Spec. Im assuming lysanders numbers are correct based on history.

    So both you guys are in spec. What is OP's bolt lug length!?

  4. #24
    Join Date
    Mar 2015
    Posts
    1,692
    Feedback Score
    0
    The issue is with the limits allowed and customer service.

    If the OP calls up the manufacture and says: "Hey, this barrel and extension assembly you sold me has a gap of less than 0.287 inch and my bolts don't fit."

    They say, "Well, 0.287" is within spec, so, your bolt must be the problem. Have a nice day!" click.

    If the OP call and says, "This barrel and extension assembly you sold me has a gap of less than 0.283 inch and my bolts don't fit." They can't weasel out of correcting the problem.

  5. #25
    Join Date
    Aug 2010
    Posts
    259
    Feedback Score
    10 (100%)
    Update.

    Rainier Arms was who I got the barrel from. I contacted their CS who immediately sent a paid shipping label and asked I include my bolt (purchased elsewhere) and I boxed it up and mailed it out.

    They emailed me a day after they got it and confirmed it had a bad extension, they did not elaborate what exactly was bad. The issue they mentioned was they could not replace my BCM gas block as they were currently on order and I was given the option to wait until it was in stock, get a refund on the entire order, or get a full refund on the BCM gas block and have them use one of their house ones for free (appears to be Superlative Arms) my only real hang up was the BCM gas block was so well made and snug on the gas block journal as well as being 4140 instead of 416SS, but I figured since the barrel was 416SS anyway using a "lesser" gas block wouldn't be a huge deal and I went with the last option.

    Got everything back yesterday and assembled it without issue. Shot it today and so far it's been great and shoots just at 1.5 MOA for 10 rounds with Hornady 55gr FMJ over 25gr Benchmark. Had a few cloverleafs with 24.2 Tac pushing a 69 SMK but they were just preliminary groups that I won't count just yet.

    I'm a little ticked it took this long but having everything go together so smoothly (save for that damn forward assist roll pin) and seeing how well it shoots with not much effort makes it all worth it.
    Last edited by bb223; 08-08-23 at 22:54.

  6. #26
    Join Date
    Jul 2006
    Location
    Oregon
    Posts
    4,600
    Feedback Score
    2 (100%)
    I slightly close up one end of a roll pin to make them easier to install.

    Hold the roll pin down on a hard flat surface and give it a few taps around one end.

  7. #27
    Join Date
    Jan 2008
    Location
    Roaming
    Posts
    889
    Feedback Score
    0
    Quote Originally Posted by lysander View Post
    The issue is with the limits allowed and customer service.

    If the OP calls up the manufacture and says: "Hey, this barrel and extension assembly you sold me has a gap of less than 0.287 inch and my bolts don't fit."

    They say, "Well, 0.287" is within spec, so, your bolt must be the problem. Have a nice day!" click.

    If the OP call and says, "This barrel and extension assembly you sold me has a gap of less than 0.283 inch and my bolts don't fit." They can't weasel out of correcting the problem.
    If the bolt lugs are .277" it will turn in a .283" space. If the bolts lugs are .277" it will not turn in a .276" space. click.

  8. #28
    Join Date
    Jan 2021
    Posts
    215
    Feedback Score
    0
    Quote Originally Posted by constructor View Post
    If the bolt lugs are .277" it will turn in a .283" space. If the bolts lugs are .277" it will not turn in a .276" space. click.
    Metal can squish 0.001", just need to turn it hard enough.

  9. #29
    Join Date
    Jan 2021
    Posts
    215
    Feedback Score
    0
    Quote Originally Posted by bb223 View Post
    Update.

    Rainier Arms was who I got the barrel from.
    Which barrel exactly? RA sells many brands, including their own.
    sorry if I missed it in earlier post, I didn't see it mentioned.

  10. #30
    Join Date
    Aug 2010
    Posts
    259
    Feedback Score
    10 (100%)
    Quote Originally Posted by DwayneZ View Post
    Which barrel exactly? RA sells many brands, including their own.
    sorry if I missed it in earlier post, I didn't see it mentioned.
    Their budget priced house brand barrel. The 16 Select middy with a 5.56 chamber 1/8 twist and medium type profile.
    Last edited by bb223; 08-14-23 at 09:07.

Page 3 of 4 FirstFirst 1234 LastLast

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
  •