WELCOME TO OUR STORE!

MAS Defense is committed to providing "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 have spent countless hours developing a updated, user friendly site for our customers. We welcome all feedback on how you think the new site is working or suggestions you may have on improvements that could be made. Please note, customer accounts were NOT transferred. Everyone will have the option to create a new account or to check out as a guest. We definitely recommend registering so you can check on orders, stay up to date with our newly added items and be notified first of all flash sales.
Thank you for your business and support!

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SHIPPING LEAD TIMES


Parts will ship in (1) business day. Barreled Uppers are built to order using our (50) point checklist, head spaced and test fired to ensure 100% function before they leave our facility. They ship in (2-3) business days.

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LOCAL PICKUP


Local Pickup is available by appointment 10am - 5:00pm / Monday - Friday in Charlotte, NC.

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INVENTORY LIVE DATA


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" any part.

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MODIFYING ORDERS


Barreled Upper Orders can not be changed or modified in any way after they have been placed. Please contact us before you place an order if you have any questions or if you are unsure of fitment.



FEATURED PRODUCTS



18" 5.56 / .223 BARRELED UPPER - MAS NERO 15" M-LOK RAIL - BALLISTIC ADVANTAGE BARREL 18" 5.56 / .223 BARRELED UPPER - MAS NERO 15" M-LOK RAIL - BALLISTIC ADVANTAGE BARREL
MSRP: $434.99
LIST PRICE: $354.99
SALE PRICE: $324.99
In Stock
(1)
POLYMER80 GLOCK 19 80% POLYMER LOWER RECEIVER BLACK - PF940Cv1-BLK POLYMER80 GLOCK 19 80% POLYMER LOWER RECEIVER BLACK - PF940Cv1-BLK
LIST PRICE: $159.99
SALE PRICE: $119.99
In Stock
(1)
18" AR-10 .308 BARRELED UPPER - BALLISTIC ADVANTAGE BARREL - MAS NERO 15" M-LOK RAIL - FDE 18" AR-10 .308 BARRELED UPPER - BALLISTIC ADVANTAGE BARREL - MAS NERO 15" M-LOK RAIL - FDE
MSRP: $584.99
LIST PRICE: $419.99
SALE PRICE: $389.99
In Stock
16" .223 WYLDE 1x8 STRAIGHT FLUTED CHROME MOLY BARREL 16" .223 WYLDE 1x8 STRAIGHT FLUTED CHROME MOLY BARREL
MSRP: $149.99
LIST PRICE: $124.99
SALE PRICE: $84.99
In Stock
(16)
18" AR-10 .308 BARRELED UPPER - BALLISTIC ADVANTAGE BARREL - MAS NERO 15" M-LOK RAIL 18" AR-10 .308 BARRELED UPPER - BALLISTIC ADVANTAGE BARREL - MAS NERO 15" M-LOK RAIL
MSRP: $569.99
LIST PRICE: $404.99
SALE PRICE: $374.99
In Stock
18" .223 WYLDE 1x8 STRAIGHT FLUTED 416R STAINLESS MELONITE BARREL 18" .223 WYLDE 1x8 STRAIGHT FLUTED 416R STAINLESS MELONITE BARREL
MSRP: $179.99
LIST PRICE: $154.99
SALE PRICE: $109.99
In Stock
18" .223 WYLDE 1x8 SPIRAL FLUTED 416R STAINLESS STEEL BARREL 18" .223 WYLDE 1x8 SPIRAL FLUTED 416R STAINLESS STEEL BARREL
MSRP: $169.99
LIST PRICE: $144.99
SALE PRICE: $104.99
In Stock
(28)
16" AR-10 .308 BARRELED UPPER - BALLISTIC ADVANTAGE BARREL - MAS NERO 15" M-LOK RAIL - FDE 16" AR-10 .308 BARRELED UPPER - BALLISTIC ADVANTAGE BARREL - MAS NERO 15" M-LOK RAIL - FDE
MSRP: $574.99
LIST PRICE: $409.99
SALE PRICE: $379.99
In Stock
DIAMONDHEAD USA 10.25" VRS T-556 KEYMOD HANDGUARD - 2215 - BLEM DIAMONDHEAD USA 10.25" VRS T-556 KEYMOD HANDGUARD - 2215 - BLEM
LIST PRICE: $159.99
SALE PRICE: $99.99
In Stock
16" AR-10 .308 BARRELED UPPER - BALLISTIC ADVANTAGE BARREL - MAS NERO 15" M-LOK RAIL 16" AR-10 .308 BARRELED UPPER - BALLISTIC ADVANTAGE BARREL - MAS NERO 15" M-LOK RAIL
MSRP: $559.99
LIST PRICE: $394.99
SALE PRICE: $364.99
In Stock
POLYMER80 GLOCK 17 80% POLYMER LOWER RECEIVER BLACK - PF940v2-BLK POLYMER80 GLOCK 17 80% POLYMER LOWER RECEIVER BLACK - PF940v2-BLK
LIST PRICE: $159.99
SALE PRICE: $119.99
In Stock
MAS DEFENSE 9MM 416R STAINLESS STEEL GLOCK 19 BARREL - TIN - BLEM MAS DEFENSE 9MM 416R STAINLESS STEEL GLOCK 19 BARREL - TIN - BLEM
LIST PRICE: $159.99
SALE PRICE: $99.99
In Stock