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 in Charlotte, NC. We do ask that you call before stopping by as we are not a "come in and browse shop".
Shipping lead times have been extended due to the Holidays. We are running approximately 4 business days behind at this time. Please note, changes cannot be made to an order after one has been placed. Please make sure your order is 100% before you place it. We do appreciate your patience and business. Thank You
In Stock Specials
- 11.5" 5.56 Barrel Option is available on all of our 10.5" 5.56 barreled upper listings.
- Yankee Hill Machine Billet Upper Receiver ***SALE $154.99***
- Nickel Boron M16 and AR15 Profile Bolt Carrier Groups ***SALE $124.99***
- 7.5", 10.5", 16" and 20" .223 Wylde 1x7, 1x8 & 1x9 Barrels (Can fire 5.56) ***Starting at $99.99***
- Barreled Uppers available in any configuration. Please call to discuss.
New Parts Added
- 7.5" 300 Blackout 416R Stainless Steel Barrels
- 14.5" 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
- GTLKM 9", 10" and 12" KeyMOD Hand Guards. 7" and 15" will be available shortly.
- SBX Sig Sauer Pistol Stabilizing Brace - GEN2
- Xtech ATG 3 Position Adjustable Grip - $16.99
- We have several Troy FDE and VTAC hand guards. Call for availability.
- 9MM BCG Sale Price $129.99
- 5.5" and 7.5" 9mm Barrels Sale Price $99.99