(4 customer reviews)


The new USMC MOS Ball Caps are designed to be low-key.  With the “you would have to be one, to know one” mentality.  They come in two sizes, and three colors.  The sizes include small/medium and large/extra-large.  The colors are olive drab, coyote, and black.  Rep your MOS with pride!  Come get your USMC MOS Ball Cap today!!  Only at Devil Dog Shirts!!!  We sell USMC Ball Caps.

SKU: DDS059BC Category: Tag:


(6 3/4” - 7 1/4”)(7 1/8” - 7 5/8”)


Olive DrabCoyoteBlack



The USMC 0 THREES MOS Ball Cap was created to give every Marine a chance to rep their MOS.  These USMC Scout Sniper Ball Caps were designed with the concept of, “you would have to be one, to know one” in mind.  Our MOS Ball Caps come in two sizes and three colors.  They include Olive Drab, Coyote, and Black colors.  Sizes include small/medium and large/extra-large sizes.  That is (6 3/4” – 7 1/4”) or (7 1/8” – 7 5/8”) respectively.  The different MOS’s that fall into the 0300 MOS are listed below.

0300 MOS

0311 : Rifleman

0312 : Riverine Assault Craft

0313 : LAV Crewman

0314 : Rigid Raiding Craft

0316 : Combat Rubber Reconnaissance Craft

0317 : Scout Sniper

0321 : Reconnaissance Man

0323 : Reconnaissance Man, Parachute Qualified

0324 : Reconnaissance Man, Combatant Diver Qualified

0326 : Reconnaissance Man, Parachute and Combatant Diver Qualified

0331 : Machine Gunner

0341 : Mortarman

0351 : Infantry Assaultman

0352 : Anti-tank Missileman

0369 : Infantry Unit Leader

0372 : Marine Special Operations Command (MarSOC) Critical Skills Operator (CSO)


Our Values

Devil Dog Shirts has the Courage to be Honorable and Committed to our fellow Marines.  We strive to perpetuate the Warrior Ethos in our Corps by creating the best gear a gun-slinger can get!  Furthermore our apparel is made right here in the United States of America!  Semper Fi!

Our Gear

  • 98% cotton, 2% spandex washed twill
  • 6-panel, structured, low-profile
  • garment-washed
  • 3?” crown
  • eight-row stitching on bill
  • sewn eyelets
  • matching under-bill


Cap Sizes

– S/M (6 3/4” – 7 1/4”)

– L/XL (7 1/8” – 7 5/8”)



All of our apparel is custom printed or embroidered to-order.  Please allow up to 2-business weeks lead-time for production.  We appreciate the opportunity to serve our fellow Marines, family, and supporters.  Thank you for your interest in Devil Dog Shirts!  Semper Fi!

Find us on Facebook at Devil Dog Shirts!

4 reviews for USMC 0 THREES MOS Ball Cap

Based on 4 reviews
5 star
4 star
3 star
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1 star
  1. Jason (verified owner)

    Great quality product. It was shipped to me in the wrong size and they were able to exchange it

    (1) (0)
  2. Jason Delgado (verified owner)

    Verified reviewVerified review - view originalExternal link

    Love this hat.

    (0) (0)
  3. Bryam Frick (verified owner)

    Verified reviewVerified review - view originalExternal link

    Love the hat…would be awesome of you had other fitted hats for sale

    (0) (0)
  4. Shawn Young (verified owner)

    Verified reviewVerified review - view originalExternal link

    Great Cover!!! Well made.

    (0) (0)
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