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 in Charlotte, NC. We do ask that you call before stopping by as we are not a "come in and browse shop".
***Shipping timeframes are as follows: Parts will ship in approximately 2-3 business days. Barreled Uppers will ship in approximately 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.
Our Memorial Day Sale is still on!
Please see the Memorial Day Sale page to view parts and barreled uppers that are still in stock.
In Stock Specials
- Huge Memorial Day Sale - Over 200 parts / barreled uppers currently on sale.
- New low pricing updated on all Barreled Uppers!
- Barreled Uppers available in any configuration. Please call to discuss.
New Parts Added
- Rock River National Match 2 Stage Trigger Sale $89.99
- 24" .223 Wylde Bull Barrels - HBAR, Straight and Spiral Fluted
- Yankee Hill Machine KR7 4", 7", 9" and 12" KeyMod Hand Guards
- 5.5", 7.5" and 10.5" 9mm Barrels Sale $119.99
- 9mm BCG Sale $129.99
- 14.5" and 16" 300 Blackout Barrels with a Pistol Gas System. These can fire Subsonic ammo.
- 18" and 20" .223 Wylde 1x8 Barrels in Chrome Moly and Stainless Steel
- We have several Troy FDE and VTAC hand guards. Call for availability.
- 7.62x39mm Nickel Boron BCG's
- 24" .223 Wylde Stainless Steel Barrels