5.7x28 AR?

5.7x28 AR?

This is a discussion on 5.7x28 AR? within the Defensive Rifles & Shotgun Discussion forums, part of the Related Topics category; Anybody have one? Thinking about getting one and also a FNH 5.7...

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Thread: 5.7x28 AR?

  1. #1
    Senior Member Array Pure Kustom's Avatar
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    5.7x28 AR?

    Anybody have one? Thinking about getting one and also a FNH 5.7


  2. #2
    Member Array SteveinNEPA's Avatar
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    Let the ballistic gel speak louder than my words...
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  3. #3
    VIP Member Array Superhouse 15's Avatar
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    I don't own onw, but put an upper together for a customer. It was a real pain to get it up and working. Feed issues, extraction and ejection issues. Eventually got it running good, just not reliable out of the box.

  4. #4
    Member Array ibesarcasm's Avatar
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    Super....... Please elaborate more on the issues if you could. The 5.7 is on my "to do" list, and I would like to know if it was anything I should be aware of. I know most issues with building a new gun like looking for extra metal or flash on the parts, cleaning, and lubrication, but what specific problems did you need to address........
    A PM is welcome as well so you don't have to tie up the thread........
    Thanks!
    Sarcasm - Just one of the many services I provide!
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  5. #5
    VIP Member Array Superhouse 15's Avatar
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    No problem. The extractor spring was weak and had no tension. No little rubber buffer in it either. The ejector plunger was oversized and I had to polish it quite a bit to get it to move. The ejector spring wouldn't compress due to the size of the hole being off of spec. The other gunsmith where I work made a spring for it. I didn't do that part. Took 3 boxes of ammo to get it running.

  6. #6
    BAC
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    VIP Member Array BAC's Avatar
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    Have not had experience with a 5.7 AR, but I have put a few rounds through the pistol. It was 'meh' at best. Too large and felt too awkward to me.

    I liked the PS90 a lot, though!


    -B
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  7. #7
    Senior Member Array MR D's Avatar
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    try: AR57

  8. #8
    VIP Member Array jwhite75's Avatar
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    Deputy friend of mine has one for his long gun, personally owned. he loves his but it is very odd looking and did take a while to get it up and running.
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  9. #9
    Member Array ibesarcasm's Avatar
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    thanks Super...... it's not gonna be a "go to" gun for me, but I like the round for a fun gun..... now I'm not sure it's gonna be worth the bother to build one.
    I have a pet peav for buying something you have to work on to MAKE it work..... know what I mean?
    Anyway, thank you for the info!
    Sarcasm - Just one of the many services I provide!
    Ever wonder why massacres never happen at a gun range??
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  10. #10
    Member Array nasal's Avatar
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    My friend has a both an FN 5.7 and a PS-90, really fun and unique range toys but they rarely get taken out because ammo is so expensive.

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