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



20" .223 WYLDE 1x8 SPIRAL FLUTED CHROME MOLY BARREL 20" .223 WYLDE 1x8 SPIRAL FLUTED CHROME MOLY BARREL
MSRP: $170.00
LIST PRICE: $144.99
SALE PRICE: $92.99
In Stock
(3)
DIAMONDHEAD USA 10.25" VRS T-556 KEYMOD HANDGUARD ***BLEM*** DIAMONDHEAD USA 10.25" VRS T-556 KEYMOD HANDGUARD ***BLEM***
MSRP: $170.00
LIST PRICE: $149.99
SALE PRICE: $79.99
In Stock
9MM AR9 BOLT CARRIER GROUP GLOCK AND COLT BCG ***BLEM*** 9MM AR9 BOLT CARRIER GROUP GLOCK AND COLT BCG ***BLEM***
MSRP: $220.00
LIST PRICE: $179.99
SALE PRICE: $154.99
In Stock
18" .223 WYLDE 1x8 SPIRAL FLUTED 416R STAINLESS STEEL BARREL 18" .223 WYLDE 1x8 SPIRAL FLUTED 416R STAINLESS STEEL BARREL
MSRP: $170.00
LIST PRICE: $144.99
SALE PRICE: $90.99
In Stock
(28)
ZEV GLOCK 9MM PRO UPPER PARTS KIT - PK-UPPER-9-PRO ZEV GLOCK 9MM PRO UPPER PARTS KIT - PK-UPPER-9-PRO
MSRP: $150.00
LIST PRICE: $142.99
SALE PRICE: $129.99
In Stock
SB TACTICAL SBPDW 3-POSITION ADJUSTABLE PISTOL STABILIZING BRACE - PDW-01-SB SB TACTICAL SBPDW 3-POSITION ADJUSTABLE PISTOL STABILIZING BRACE - PDW-01-SB
MSRP: $300.00
LIST PRICE: $239.99
SALE PRICE: $209.99
In Stock
16" .223 WYLDE 1x8 STRAIGHT FLUTED CHROME MOLY BARREL 16" .223 WYLDE 1x8 STRAIGHT FLUTED CHROME MOLY BARREL
MSRP: $150.00
LIST PRICE: $124.99
SALE PRICE: $70.99
In Stock
(16)
AERO PRECISION AR15 COMPLETE UPPER RECEIVER ***BLEM*** AERO PRECISION AR15 COMPLETE UPPER RECEIVER ***BLEM***
MSRP: $125.00
LIST PRICE: $119.99
SALE PRICE: $79.99
In Stock
16" .223 WYLDE 1x8 SPIRAL FLUTED CHROME MOLY BARREL 16" .223 WYLDE 1x8 SPIRAL FLUTED CHROME MOLY BARREL
MSRP: $150.00
LIST PRICE: $124.99
SALE PRICE: $75.99
In Stock
(9)
18" .223 WYLDE 1x8 SPIRAL FLUTED CHROME MOLY BARREL 18" .223 WYLDE 1x8 SPIRAL FLUTED CHROME MOLY BARREL
MSRP: $160.00
LIST PRICE: $134.99
SALE PRICE: $84.99
In Stock
(6)
20" .223 WYLDE 1x8 STRAIGHT FLUTED CHROME MOLY BARREL 20" .223 WYLDE 1x8 STRAIGHT FLUTED CHROME MOLY BARREL
MSRP: $170.00
LIST PRICE: $144.99
SALE PRICE: $93.99
In Stock
(13)