5.7 AR upper problems, need advice.

This is a discussion on 5.7 AR upper problems, need advice. within the Defensive Rifles & Shotgun Discussion forums, part of the Related Topics category; OK, I'm working overtime for my real job and can't get to the gunshop today. Last time I was there, we put together a lower ...

Results 1 to 1 of 1

Thread: 5.7 AR upper problems, need advice.

  1. #1
    VIP Member Array Superhouse 15's Avatar
    Join Date
    Aug 2006
    Location
    Florida
    Posts
    3,055

    5.7 AR upper problems, need advice.

    OK, I'm working overtime for my real job and can't get to the gunshop today. Last time I was there, we put together a lower for a customer who has a 5.7 upper. We fired it a few times after assembly and had no issues other than the heavy buffer it came with is noisy.

    The customer is there today and nothing but problems. Double feeds, the occasional slam fire, missfeeds crushing the cases, and now, light primer strikes. I've been offering advice from afar and no success yet, so I'm asking the same from you all. Anybody have any experience with this platform? So far they have changed out the carbine spring for a rifle-length, and switched the heavy buffer with a lighter one, success is limited. Ammo is the blue-tip FN, stock 50 round mag blocked to 35 () rounds. Well lubed, brand new Spike's lower with a DPMS parts kit assembled by skilled gun monkeys.

  2. Remove Ads

Links

Posting Permissions

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

Similar Threads

  1. 5.7 X 28 AR-15 Upper
    By msgt/ret in forum Defensive Rifles & Shotgun Discussion
    Replies: 3
    Last Post: July 29th, 2010, 11:25 AM
  2. Need a little help with an M4 upper
    By Pro2A in forum Defensive Rifles & Shotgun Discussion
    Replies: 7
    Last Post: June 14th, 2010, 08:25 PM
  3. New guy from upper SC
    By smittyj in forum New Members Introduce Yourself
    Replies: 41
    Last Post: August 20th, 2008, 01:54 PM

Search tags for this page

5.7 ar
,

5.7 ar upper

,

5.7 ar upper for sale

,
5.7 ar upper for sale in oklahoma
,

5.7 upper for sale

,
5.7 upper heavy buffer
,
5.7ar upper
,
ar 5.7 issues
,
ar 5.7 problems
,
ar five seven problems
,
five seven ar upper mag problems
,
s&w ar 5.7
Click on a term to search for related topics.