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.
Over 2,000 FIVE STAR Ratings earned in 2014. Thank You for your support and continued business!
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
- 5.5" and 7.25" 9mm Barrels
- 9mm BCG's
- 7.5" 300 Blackout 416R Stainless Steel Barrels
- 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
- 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 in BLK and FDE
- We have several Troy FDE and VTAC hand guards. Call for availability.
- Aero Precision Upper Receivers
- WMD Nickel Boron Upper Receivers
- 10.5" 9mm Barrels
- 10.5" 7.62x39mm 1x10 Barrels
- 7.62x39mm Nickel Boron BCG's
- AR15 Triggers
- AR10 Parts and Barreled Uppers March 2015