Pennsylvania Firearm Owners Association
Results 1 to 5 of 5

Thread: ANY CLUES?

  1. #1
    Join Date
    Mar 2012
    Location
    Pittsburgh area, Pennsylvania
    (Allegheny County)
    Posts
    28
    Rep Power
    0

    Default ANY CLUES?

    Ok so I completed an AR build in 6.5 CM back in March and am now just got around to shooting it. It has an Aero Precision 22" upper and Ground Zero Precision BCG in an 80% hand finished lower rcvr. The problem is, see pics: I have had a few jams that have severely damaged the cases to the extent of bending and creasing. I have never seen anything like it. Wondering if anyone else has come across this? I can't determine if it could be extractor issue, mag issue or buffer spring. I am using AR Stoner steel mags and Pmags for 308. I did do a dry run by cycling the bolt with some ammo in both mags and found a round didn't extract and one in the mag trying to go under or around the one in the chamber so I am leaning toward extractor but could there be other issues? It doesn't do it on every round either. I would fire 2 or 3 consecutive rounds then it would happen, same with cycling rounds by hand. When it does fire btw, it shoots very nice groups.
    Attached Images Attached Images

  2. #2
    Join Date
    Jan 2019
    Location
    Pottsville, Pennsylvania
    (Schuylkill County)
    Posts
    2
    Rep Power
    0

    Default Re: ANY CLUES?

    Seen it occur with my department steel mags that were used for trainings. Just never figured out what caused it because it was a sporadic issue. Mags were also immediately taken out of service.

  3. #3
    Join Date
    Jun 2010
    Location
    Wynnewood, Pennsylvania
    (Montgomery County)
    Posts
    277
    Rep Power
    2476993

    Default Re: ANY CLUES?

    Are you using the same magazine?

  4. #4
    Join Date
    Mar 2012
    Location
    Pittsburgh area, Pennsylvania
    (Allegheny County)
    Posts
    28
    Rep Power
    0

    Default Re: ANY CLUES?

    Quote Originally Posted by MD66948 View Post
    Are you using the same magazine?
    Tried steel AR Stoner mag and Magpul PMag. The steel was live fired (the pics) and the PMag was hand cycled with live rounds. it seems it will cycle a couple times then jam. Note: All mags are new as is firearm parts.

  5. #5
    Join Date
    Jan 2013
    Location
    Dover, Pennsylvania
    (York County)
    Posts
    1,720
    Rep Power
    21474844

    Default Re: ANY CLUES?

    Could be a mag, doubtful with a p-mag, but you did hand finish the lower, so check the mag catch placement (height of feed lips to high or low).

    Could be the extractor - not enough gap between the extractor and the bolt face so there’s not space for the rim to engage. Make sure the extractor is not binding in the BCG too.

    Mic your barrel chamber too (or hand run a bunch of ammo), it could be tight and need some polish.

    Just my $.02
    Resistance to tyrants is obedience to God.

Similar Threads

  1. Car may provide clues in pastor's shooting
    By WhiteFeather in forum General
    Replies: 0
    Last Post: June 26th, 2008, 10:19 AM

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
  •  

Local gun shops | Local shooting ranges | Philadelphia Shooting Ranges | Philadelphia Gun Shops | Pittsburgh Shooting Ranges | Pittsburgh Gun Shops