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Learn how My Account View Wishlist SALES & SPECIALS BLEM SALE POLYMER80 SB TACTICAL SYLVAN ARMS FAXON FIREARMS BALLISTIC ADVANTAGE BRANDS MAS DEFENSE A - M 5D TACTICAL AERO PRECISION BALLISTIC ADVANTAGE BATTLE STEEL BLACKHAWK BURRIS CMC TRIGGERS FAXON FIREARMS FRANKLIN ARMORY GEARHEAD WORKS HOLOSUN INFORCE MAGPUL MISSION FIRST TACTICAL N - Z NC STAR NEW FRONTIER NORTH SIDE KNIVES POF USA POLYMER 80 ROCK RIVER ARMS SB TACTICAL SHOCKWAVE - KAK SYLVAN ARMS THORDSON TRIJICON TROY INDUSTRIES UTG / LEAPERS YANKEE HILL MACHINE AR-15 AR-15 BARRELED UPPERS 5.56 NATO / .223 7.5" 5.56 NATO / .223 10.5" 5.56 NATO / .223 11.5" 5.56 NATO / .223 14.5" 5.56 NATO / .223 16" 5.56 NATO / .223 .223 WYLDE 16" .223 WYLDE 18" .223 WYLDE 20" .223 WYLDE 300 BLACKOUT 6" 300 AAC BLACKOUT 7.5" 300 AAC BLACKOUT 8.5" 300 AAC BLACKOUT 9.5" 300 AAC BLACKOUT 10.5" 300 AAC BLACKOUT 16" 300 AAC BLACKOUT 9MM 4.75" 9MM 7.5" 9MM 10.5" 9MM 16" 9MM AR-15 BUILD KITS AR-15 UPPER PARTS UPPER RECEIVERS BARRELS 5.56 NATO BARRELS .223 WYLDE BARRELS 300 BLACKOUT BARRELS 9MM BARRELS BCG's / CHARGING HANDLES BOLT CARRIER GROUPS CHARGING HANDLES HANDGUARDS ALL HANDGUARDS ACCESSORIES DROP IN 4"-5" PISTOL 7" CARBINE 10" SPECTER 11"-13" RIFLE 15"+ EXT RIFLE GAS BLOCKS / TUBES MUZZLE DEVICES 1/2 x 28 TPI 1/2 x 36 TPI 5/8 x 24 TPI THREAD CONVERTERS AR-15 LOWER PARTS LOWER PARTS AND KITS TRIGGERS GRIPS STOCKS - PISTOL BRACES ACCESSORIES PISTOL ARM BRACES STOCKS 80% LOWERS AR 9MM LOWER PARTS BIPODS MAGAZINES AR-10 AR-10 BARRELED UPPERS AR-10 UPPER PARTS AR-10 UPPER RECEIVERS AR-10 BARRELS AR-10 BCG's / CHARGING HANDLES AR-10 HANDGUARDS AR-10 GAS BLOCK / GAS TUBES AR-10 MUZZLE DEVICES AR-10 LOWER PARTS AR-10 LOWER PARTS KITS AR-10 TRIGGERS AR-10 STOCKS - KITS AR-10 GRIPS AR-10 80% LOWERS GLOCK ACCESSORIES GLOCK UPPER PARTS GLOCK BARRELS GLOCK 19 BARRELS GLOCK 17 BARRELS GLOCK 34 BARRELS GLOCK 23 BARRELS GLOCK 22 BARRELS GLOCK UPPER PARTS KITS GLOCK MUZZLE DEVICES GLOCK LOWER PARTS GLOCK FRAME PARTS GLOCK TRIGGERS GLOCK 80% LOWERS GLOCK 19/23/32 80% LOWERS GLOCK 17/22 80% LOWERS SIGHTS SIGHTS OPTICS MOUNTS TOOLS KNIVES TOOLS FLASHLIGHTS KNIVES SWAG About Us -- Contact My Account Help -- 658 Griffith Road Suite 111 Charlotte, NC 28217 980-265-1005 Support@MASDefense.com Let's Stay In Touch Facebook Twitter Instagram 0 MAS DEFENSE (980) 265-1005 Contact Log-In | Account SALES & SPECIALS BLEM SALE POLYMER80 SB TACTICAL SYLVAN ARMS FAXON FIREARMS BALLISTIC ADVANTAGE BRANDS MAS DEFENSE A - M 5D TACTICAL AERO PRECISION BALLISTIC ADVANTAGE BATTLE STEEL BLACKHAWK BURRIS CMC TRIGGERS FAXON FIREARMS FRANKLIN ARMORY GEARHEAD WORKS HOLOSUN INFORCE MAGPUL MISSION FIRST TACTICAL N - Z NC STAR NEW FRONTIER NORTH SIDE KNIVES POF USA POLYMER 80 ROCK RIVER ARMS SB TACTICAL SHOCKWAVE - KAK SYLVAN ARMS THORDSON TRIJICON TROY INDUSTRIES UTG / LEAPERS YANKEE HILL MACHINE AR-15 AR-15 BARRELED UPPERS 5.56 NATO / .223 7.5" 5.56 NATO / .223 10.5" 5.56 NATO / .223 11.5" 5.56 NATO / .223 14.5" 5.56 NATO / .223 16" 5.56 NATO / .223 .223 WYLDE 16" .223 WYLDE 18" .223 WYLDE 20" .223 WYLDE 300 BLACKOUT 6" 300 AAC BLACKOUT 7.5" 300 AAC BLACKOUT 8.5" 300 AAC BLACKOUT 9.5" 300 AAC BLACKOUT 10.5" 300 AAC BLACKOUT 16" 300 AAC BLACKOUT 9MM 4.75" 9MM 7.5" 9MM 10.5" 9MM 16" 9MM AR-15 BUILD KITS AR-15 UPPER PARTS UPPER RECEIVERS BARRELS 5.56 NATO BARRELS .223 WYLDE BARRELS 300 BLACKOUT BARRELS 9MM BARRELS BCG's / CHARGING HANDLES BOLT CARRIER GROUPS CHARGING HANDLES HANDGUARDS ALL HANDGUARDS ACCESSORIES DROP IN 4"-5" PISTOL 7" CARBINE 10" SPECTER 11"-13" RIFLE 15"+ EXT RIFLE GAS BLOCKS / TUBES MUZZLE DEVICES 1/2 x 28 TPI 1/2 x 36 TPI 5/8 x 24 TPI THREAD CONVERTERS AR-15 LOWER PARTS LOWER PARTS AND KITS TRIGGERS GRIPS STOCKS - PISTOL BRACES ACCESSORIES PISTOL ARM BRACES STOCKS 80% LOWERS AR 9MM LOWER PARTS BIPODS MAGAZINES AR-10 AR-10 BARRELED UPPERS AR-10 UPPER PARTS AR-10 UPPER RECEIVERS AR-10 BARRELS AR-10 BCG's / CHARGING HANDLES AR-10 HANDGUARDS AR-10 GAS BLOCK / GAS TUBES AR-10 MUZZLE DEVICES AR-10 LOWER PARTS AR-10 LOWER PARTS KITS AR-10 TRIGGERS AR-10 STOCKS - KITS AR-10 GRIPS AR-10 80% LOWERS GLOCK ACCESSORIES GLOCK UPPER PARTS GLOCK BARRELS GLOCK 19 BARRELS GLOCK 17 BARRELS GLOCK 34 BARRELS GLOCK 23 BARRELS GLOCK 22 BARRELS GLOCK UPPER PARTS KITS GLOCK MUZZLE DEVICES GLOCK LOWER PARTS GLOCK FRAME PARTS GLOCK TRIGGERS GLOCK 80% LOWERS GLOCK 19/23/32 80% LOWERS GLOCK 17/22 80% LOWERS SIGHTS SIGHTS OPTICS MOUNTS TOOLS KNIVES TOOLS FLASHLIGHTS KNIVES SWAG "---" --- --- ---/span Dan R @ Volusion | 10/11/2017 | No text on hero image -- SALES-SPECIALS BARRELED UPPERS UPPER PARTS LOWER PARTS 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. Thank you for your business and support! Team MAS Defense local_shipping SHIPPING LEAD TIMES Parts ship in approximately (1-3) business day. Barreled Uppers ship in approximately (3-5) business days. Due to the high volume of orders, we can not change, cancel, modify, edit or combine orders after they are placed. E-mails can take up to 72 hours to respond to. store LOCAL PICKUP Given the dynamic nature of the current Coronavirus (COVID-19) situation, Local Pickup is no longer available. list_alt ORDERS All of our inventory is LIVE DATA. If a part shows in stock, we have it in stock. We do not "Back Order" parts. 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 with any questions. receipt FRAUD POLICY Due to increased fraudulent activity, customers with different billing and shipping addresses or credit card names will be required to submit a copy of their drivers license to confirm their identity. Once confirmed, customers will not have to resubmit on future orders. TOOLS / Bipods SWAG CUSTOM ORDERS Featured -- -- FEATURED PRODUCTS SB TACTICAL SBA3 5-POSITION ADJUSTABLE PISTOL STABILIZING BRACE - SBA3-01-SB RETAIL : $170.00 Our Price : $129.99 (Out of Stock) ( 38 ) POLYMER80 GLOCK 17/22 80% POLYMER LOWER RECEIVER GRAY - P80-PF940V2-GRY RETAIL : $160.00 Our Price : $149.99 SALE PRICE : $129.99 (Out of Stock) ( 12 ) 16" .223 WYLDE AR-15 1x8 BALLISTIC ADVANTAGE HANSON STAINLESS STEEL MID-LENGTH BARREL - PREMIUM BABL223013P RETAIL : $245.00 Our Price : $232.75 (Out of Stock) ( 5 ) POLYMER80 AR15 RHINO 80% POLYMER LOWER RECEIVER KIT BLACK - P80-RL556V3-BLK RETAIL : $79.99 Our Price : $74.99 SALE PRICE : $64.99 (Out of Stock) ( 64 ) POLYMER80 GLOCK 17/22 80% POLYMER LOWER RECEIVER OD GREEN - P80-PF940V2-ODG RETAIL : $160.00 Our Price : $149.99 SALE PRICE : $129.99 (Out of Stock) ( 10 ) 18" .223 WYLDE AR-15 1x8 BALLISTIC ADVANTAGE HANSON STAINLESS STEEL MID-LENGTH BARREL - PREMIUM BABL223019P RETAIL : $255.00 Our Price : $242.25 In Stock POLYMER80 GLOCK 17/22 80% POLYMER LOWER RECEIVER - FLAT DARK EARTH (FDE) - P80-PF940V2-FDE RETAIL : $160.00 Our Price : $149.99 SALE PRICE : $129.99 (Out of Stock) ( 18 ) 14.5" 5.56 / .223 AR-15 1x7 BALLISTIC ADVANTAGE GOVERNMENT PROFILE MID-LENGTH BARREL - MODERN BABL556010M RETAIL : $160.00 Our Price : $152.00 In Stock POLYMER80 GLOCK 17/22 80% POLYMER LOWER RECEIVER BLACK - P80-PF940V2-BLK RETAIL : $160.00 Our Price : $149.99 SALE PRICE : $129.99 (Out of Stock) ( 27 ) SB TACTICAL SBA4 PISTOL STABILIZING BRACE 5-POSITION - SBA4-01-SB RETAIL : $170.00 Our Price : $129.99 (Out of Stock) ( 15 ) 80% BILLET LOWER RECEIVER GLOCK 9MM AR-9 - BLACK RETAIL : $150.00 Our Price : $129.99 In Stock ( 14 ) Get on the list & get exclusive deals Enter your email address for special offers from Company About Us Contact Privacy Policy Terms & Conditions Fraud Policy Account Log in / Register Wishlist My Rewards View My Cart Customer Care Help / FAQ Shipping Policy Returns & Exchanges Get on the lis...