1. Check out the Hot Deals section of the Marketplace forum to order an official Mossbergowners.com hat.

New 590A1 question

Discussion in 'Mossberg 590 Pump Action' started by 11BRAVO20, Mar 5, 2018.

  1. 11BRAVO20

    11BRAVO20 Copper BB

    Messages:
    8
    I bought a brand new Mossberg 590A1 from my local gun store and have a couple of questions. I have the 51771 model number (XS ghost rings, Tri-rail for end, 20" barrel, speed feed stock and 8+1 capacity). Receiver is marked 590A1 but the barrel is marked (590)? Does this model have the "heavy walled barrel"? On Mossberg's website in the 590A1 Tactical shotgun section it states that the 51771 has a heavy or thick walled barrel, however the stated weight of the shotgun (7Lbs) is the same weight as the 500 series with same length barrel......I am beginning to think I did not get the "heavy walled barrel" on my model.
    pic1.jpg
    IMG_20180223_230236699.jpg
    Last edited: Mar 5, 2018
    Elbert Garrett likes this.
  2. 95jza80tt

    95jza80tt .270 WIN

    Messages:
    221
    I don't believe they ever offered a standard 590 with the XS ghost ring sights, but I'm pretty new to the game. Wait for one of the more established members to come in here to either confirm or correct me. perhaps a better lit picture of the muzzle as well will help.
  3. 11BRAVO20

    11BRAVO20 Copper BB

    Messages:
    8
    shot from the muzzle
    IMG_20180305_154806673.jpg
  4. Elbert Garrett

    Elbert Garrett .30-06 Supporter

    Messages:
    1,239
    Welcome to the group 11B....Hooah!
  5. 11BRAVO20

    11BRAVO20 Copper BB

    Messages:
    8
    Thanks!
  6. Jmm14534

    Jmm14534 20g Supporter Premier Member

    Messages:
    532
    11Bravo20,

    I have basically the same model. It's the Blackwater Series 590A1.

    MFR#: 51772

    UPC: 015813517720

    Features:

    3" Chambered in 12 Gauge
    Heavy-Walled Barrels, Metal Trigger Guard and Safety Buttons Built to Mil-Spec Demands
    20" Barrel, 9-Shot Capacities
    Tri-Rail Forend and Tactical Light Forend Models
    Free Gun Lock/10-Year Limited Warranty Included

    Specifications:

    Gauge 12
    Chamber Size 3"
    Capacity 9
    Barrel 20"
    Sights XS Ghost Ring - AR Style
    Chokes Cylinder Bore
    Overall Length 41"
    Length Of Pull 13.875"
    Barrel Finish Parkerized
    Stock Synthetic (Black - SpeedFeed)
    Weight 7.25 lb

    I measured my barrel thickness at the muzzle and it's 0.110" or so.

    Just FYI. I don't like the Tri-Rail Foreend and I'm going to purchase a Hogue Foreend for it. In order to get my XS sight system functioning I had to replace the front sight with a lower sight bar. I have a thread on this specifically if you're interested.
  7. John A.

    John A. Unconstitutional laws are not laws. Staff Member Administrator Global Moderator

    Messages:
    16,076
    Lefty9 likes this.
  8. 11BRAVO20

    11BRAVO20 Copper BB

    Messages:
    8
    jmm14534: Is your barrel marked "---Model 590---?
    What is throwing me off is that my receiver is marked 590A1 but barrel says model 590........Your model is 71/4lbs mine is 7
  9. carbinemike

    carbinemike Global Moderator Staff Member Global Moderator "Philanthropist"

    Messages:
    6,079
    Here is an old thread to read through. One post from Lazy Eyed Sniper listed the outside of the barrel (at the end) as 29/32 inch. Amother quote from LES..."All stock 590a1 barrels are marked '590', not 590a1 and the only identifier on the 'a1' models is the '590A1' roll mark on the receiver". You probably have the heavy wall barrel but this should help make sure. Keep us posted and welcome aboard!

    http://mossbergowners.com/forum/index.php?threads/identifying-a-heavy-wall-bbl.6477/
  10. Jmm14534

    Jmm14534 20g Supporter Premier Member

    Messages:
    532
    Sir John A.

    My tri-rail foreend is not like the one you show. Below is a pic of mine. It came with the gun. I don't really need all the rails since my primary purpose for the shotgun does not call for lots of stuff hanging from it. Also the rails hurt my bare hands when shooting slugs and buckshot. And finally it is relatively heavy. I would like to shed as much weight as possible from this brute!!

    Also I love your camo job!!!

    IMG_0152.JPG
  11. Jmm14534

    Jmm14534 20g Supporter Premier Member

    Messages:
    532
    590 just like yours.
    IMG_0151.JPG
  12. Fred245

    Fred245 .410

    Messages:
    69
    OP, the barrel on my 590a1 is also marked "590." However the receiver itself should be marked "590a1." Another tell tale of the 590a1 is the metal trigger group; only the 590a1's come with metal trigger guards (unless it was modified from stock configuration).

    The barrel you show in the pic also looks to be noticeably thicker than the barrel on a regular 590/500.

    As a last resort, you can always email Mossberg's customer service with your serial # to confirm you in fact have a 590a1.
  13. 11BRAVO20

    11BRAVO20 Copper BB

    Messages:
    8
    Yes, My receiver is clearly marked 590A1, I was just concerned about the barrel considering it was a deciding factor in my purchase.
    I still sent an email to Mossberg to get absolute clarification.
  14. carbinemike

    carbinemike Global Moderator Staff Member Global Moderator "Philanthropist"

    Messages:
    6,079
    I think your surest way is to measure it.
    old mossy likes this.
  15. old mossy

    old mossy Global Moderator Staff Member Global Moderator Moderator

    Messages:
    13,048
    Here's a pic of both. 590 looks about 1/16",,,,590a1 about1/8"

    590.590a1 barrels.jpg
  16. 11BRAVO20

    11BRAVO20 Copper BB

    Messages:
    8
    This is a shot of my barrel. I don't have a caliper available so could only use a tape which is difficult to get a good measurement. That being said, mine comes in at less than 1/8th. IMG_20180306_130221022.jpg
  17. 11BRAVO20

    11BRAVO20 Copper BB

    Messages:
    8
    I don't know what year your 590A1 is but it looks like they machine the barrels at the muzzle more (rounded profile) than when yours was manufactured (flatter profile). This still leaves me a little unsure as to what barrel I actually have.

    Attached Files:

  18. 11BRAVO20

    11BRAVO20 Copper BB

    Messages:
    8
    Just an update: I received confirmation from Mossberg today in regards to the barrel. I am posting the email response here in case anyone else has a similar question in the future.
    Email:
    Hi Kevin,
    Thank you very much for those pictures. It was perfect you sent a picture of the muzzle! This is indeed a heavy walled 590a1 barrel, I can confirm just by looking at the pictures sent. In checking with production there was a line that was just stamped 590. You can send in the barrel if you wish for a replacement with the proper stamp but it would be the same barrel either way.

    Sincerely,
    Customer Service Team
    O.F. Mossberg & Sons, Inc.


    [​IMG]
    old mossy and carbinemike like this.
  19. John A.

    John A. Unconstitutional laws are not laws. Staff Member Administrator Global Moderator

    Messages:
    16,076
    Mossberg has really notched up their customer service lately. Glad to see it too.
    old mossy likes this.
  20. Jmm14534

    Jmm14534 20g Supporter Premier Member

    Messages:
    532
    11BRAVO20,

    Just put the Hogue fore end on my 590A1. What a difference - very nice. It's lighter than the factory tri-rail. It has a great grip surface. You don't have to worry about how you hold it a where your hand is when you pull the trigger. All that for $22 on Ebay!!

Share This Page