MAS Defense is committed to providing you quality parts at reasonable prices. Our foundation is built on excellent customer service, honesty and integrity. These simple guidelines are what has made MAS Defense the preferred company it is today. We strive to meet all of your needs and hope to become your one and only tactical weapon store. Contact us directly with any questions or to discuss your build.

All of our inventory is live data. If a part shows in stock, we have it in stock. We do not believe in "Back Ordering" parts and will NEVER sell any part that we do not have in stock. Barreled Uppers are built to order.

 

 

 

*** Local Pick Up is available by appointment only in Charlotte, NC. We do ask that you call before stopping by as we are not a "come in and browse shop".

 

*** Shipping timeframes have been delayed due to the increasing demand for AR15 parts. Parts will ship in approximately 2 business days. Barreled Uppers are built to order and will ship in approximately 3 - 4 business days. 

 

*** Orders can NOT be edited, changed or modified in any way once they have been placed. Please make sure your are 100% sure you are ordering the correct parts. Give us a call before you place an order if you have any questions or if you are unsure of fitment.

 

 

 

In Stock Specials
- NEW Ridgeline KeyMOD Series Barreled Uppers and Hand Guards
- Updated Barreled Upper Sale Pricing! Our lowest prices ever!
- Over 250 parts currently On Sale.
- Barreled Uppers available in any configuration. Please give us a call if you do not see the one you want.

 

New Parts Added
- Side Charging Handle Non-Reciprocating Billet Upper Receiver
- Thordsen Customs Pistol Cheek Rest Kits with MFT Saddle
- Aero Precision FDE and No Forward Assist Upper Receivers. Can be used on builds.
- MAS Defense T-Shirts in Black, Red and Gray
- We have several Troy M-LOK, FDE and VTAC hand guards that are not on the site. Please call for availability.

 

Coming Soon 
- UTG Parts - Stocks, Rails, Sights, Grips, Hand Stops
- 7.5" AR15 Pistol "Go Bag". Discretely carry your AR Pistol and spare mags. 


     
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    YHM AR15 BOLT CARRIER GROUP - YHM-BCBT-556 5.56 & 300 BLKOUT FLASH CAN "SLIM" MUZZLE BRAKE 5/8 x 24 TPI CRKT PAZODA KNIFE AND EAT'N TOOL COMBO - CR6490EC SIG SB15 PISTOL STABILIZING BRACE - FDE
    YHM AR15 BOLT CARRIER GROUP - YHM-BCBT-556 5.56 & 300 BLKOUTFLASH CAN "SLIM" MUZZLE BRAKE 5/8 x 24 TPICRKT PAZODA KNIFE AND EAT'N TOOL COMBO - CR6490ECSIG SB15 PISTOL STABILIZING BRACE - FDE

    $129.99

    $114.99

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    $34.99

    $24.99

    (12)

    $24.99

    $14.99

    (8)

    $129.99

    $114.99

    (5)
    KEYMOD 2" RAIL SECTION KEYMOD 3" RAIL SECTION KEYMOD 5" RAIL SECTION MISSION FIRST TACTICAL - MFT BUPSW-BLK SIGHT SET
    KEYMOD 2" RAIL SECTIONKEYMOD 3" RAIL SECTIONKEYMOD 5" RAIL SECTIONMISSION FIRST TACTICAL - MFT BUPSW-BLK SIGHT SET

    $14.99

    $12.49

    $16.99

    $13.49

    (1)

    $18.99

    $16.99

    $74.99

    $64.99

    TROY INDUSTRIES BATTLERAIL 3 PIECE RAIL KIT TROY MEDIEVAL FLASH HIDER 5.56 / .223 AR15 A4 STRIPPED UPPER RECEIVER - BLEM YANKEE HILL STRIPPED BILLET UPPER RECEIVER YHM-110-BILLET - BLEM
    TROY INDUSTRIES BATTLERAIL 3 PIECE RAIL KITTROY MEDIEVAL FLASH HIDER 5.56 / .223AR15 A4 STRIPPED UPPER RECEIVER - BLEMYANKEE HILL STRIPPED BILLET UPPER RECEIVER YHM-110-BILLET - BLEM

    $29.99

    $19.99

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    $39.99

    $24.99

    (2)

    $79.99

    $39.99

    (76)

    $199.99

    $144.99

    AR9 9MM SIDE CHARGING HANDLE BILLET UPPER RECEIVER AR15 SIDE CHARGING HANDLE BILLET UPPER RECEIVER 6 POSITION COMPLETE BUFFER TUBE KIT - COMMERCIAL AR15 MAGPUL MOE STOCK - COMMERCIAL - MAG401-FDE
    AR9 9MM SIDE CHARGING HANDLE BILLET UPPER RECEIVERAR15 SIDE CHARGING HANDLE BILLET UPPER RECEIVER6 POSITION COMPLETE BUFFER TUBE KIT - COMMERCIAL AR15MAGPUL MOE STOCK - COMMERCIAL - MAG401-FDE

    $274.99

    $199.99

    $299.99

    $229.99

    $37.99

    $27.99

    (7)

    $42.99

    $34.99

    MAGPUL CTR STOCK - COMMERCIAL - MAG311-FDE MFT BATTLELINK MINIMALIST STOCK - COMMERCIAL- BMS BL MFT BATTLELINK MINIMALIST STOCK - COMMERCIAL- BMS SDE 8" CMMG 300 AAC BLACKOUT 1x7 MELONITE NITRIDE BARREL
    MAGPUL CTR STOCK - COMMERCIAL - MAG311-FDEMFT BATTLELINK MINIMALIST STOCK - COMMERCIAL- BMS BLMFT BATTLELINK MINIMALIST STOCK - COMMERCIAL- BMS SDE8" CMMG 300 AAC BLACKOUT 1x7 MELONITE NITRIDE BARREL

    $59.99

    $49.99

    $59.99

    $49.99

    $59.99

    $49.99

    $169.99

    $149.99

    10.5" 300 AAC BLACKOUT 1x8 HBAR CHROME MOLY BARREL 10.5" 300 AAC BLACKOUT 1x7 HBAR 416 STAINLESS STEEL BARREL 7.5" .223 WYLDE 1x7 M4 CONTOUR CHROME MOLY BARREL 7.5" .223 WYLDE 1x7 M4 CONTOUR STAINLESS STEEL BARREL
    10.5" 300 AAC BLACKOUT 1x8 HBAR CHROME MOLY BARREL10.5" 300 AAC BLACKOUT 1x7 HBAR 416 STAINLESS STEEL BARREL7.5" .223 WYLDE 1x7 M4 CONTOUR CHROME MOLY BARREL7.5" .223 WYLDE 1x7 M4 CONTOUR STAINLESS STEEL BARREL

    $139.99

    $109.99

    (13)

    $169.99

    $119.99

    (2)

    $119.99

    $74.99

    (14)

    $129.99

    $79.99

    (8)
    10.5" .223 WYLDE 1x7 M4 CONTOUR CHROME MOLY BARREL 10.5" .223 WYLDE 1x7 M4 CONTOUR STAINLESS STEEL BARREL 10.5" .223 WYLDE 1x8 M4 CONTOUR CHROME MOLY BARREL 10.5" .223 WYLDE 1x8 M4 CONTOUR STAINLESS STEEL BARREL
    10.5" .223 WYLDE 1x7 M4 CONTOUR CHROME MOLY BARREL10.5" .223 WYLDE 1x7 M4 CONTOUR STAINLESS STEEL BARREL10.5" .223 WYLDE 1x8 M4 CONTOUR CHROME MOLY BARREL10.5" .223 WYLDE 1x8 M4 CONTOUR STAINLESS STEEL BARREL

    $129.99

    $89.99

    (1)

    $139.99

    $99.99

    $129.99

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    $139.99

    $99.99

    (7)
    10.5" .223 WYLDE 1x8 HBAR STAINLESS STEEL BARREL 16" .223 WYLDE 1x7 M4 CONTOUR CHROME MOLY BARREL 16" .223 WYLDE 1x7 M4 CONTOUR STAINLESS STEEL BARREL 16" .223 WYLDE 1x8 M4 CONTOUR STAINLESS STEEL BARREL
    10.5" .223 WYLDE 1x8 HBAR STAINLESS STEEL BARREL16" .223 WYLDE 1x7 M4 CONTOUR CHROME MOLY BARREL16" .223 WYLDE 1x7 M4 CONTOUR STAINLESS STEEL BARREL16" .223 WYLDE 1x8 M4 CONTOUR STAINLESS STEEL BARREL

    $139.99

    $89.99

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    $139.99

    $99.99

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    $149.99

    $114.99

    $149.99

    $114.99

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    24" .223 WYLDE 1x8 HBAR CHROME MOLY BARREL 24" .223 WYLDE 1x8 STRAIGHT FLUTED CHROME MOLY BARREL 24" .223 WYLDE 1x8 SPIRAL FLUTED CHROME MOLY BARREL 24" .223 WYLDE 1x8 STRAIGHT FLUTED STAINLESS STEEL BARREL
    24" .223 WYLDE 1x8 HBAR CHROME MOLY BARREL24" .223 WYLDE 1x8 STRAIGHT FLUTED CHROME MOLY BARREL24" .223 WYLDE 1x8 SPIRAL FLUTED CHROME MOLY BARREL24" .223 WYLDE 1x8 STRAIGHT FLUTED STAINLESS STEEL BARREL

    $169.99

    $124.99

    (1)

    $189.99

    $134.99

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    $199.99

    $139.99

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    $209.99

    $154.99

    (1)
    24" .223 WYLDE 1x8 SPIRAL FLUTED STAINLESS STEEL BARREL
    24" .223 WYLDE 1x8 SPIRAL FLUTED STAINLESS STEEL BARREL

    $219.99

    $159.99