Welcome.



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


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SHIPPING

Parts ship in approximately (3-5) BUSINESS days. Barreled Uppers ship in approximately (5-7) BUSINESS days. Due to the high volume of orders, we cannot cancel, modify, edit or combine orders after they are placed. E-mails can take 24-48 hours to respond to.

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SATE & AGE RESTRICTIONS

Please click HERE for updated information.

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INVENTORY

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.


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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. 

FEATURED PRODUCTS



MAS DEFENSE 9MM COLD HAMMER FORGED STEEL BARREL - GLOCK 19 FITMENT - GOLD TiN MAS DEFENSE 9MM COLD HAMMER FORGED STEEL BARREL - GLOCK 19 FITMENT - GOLD TiN
MSRP: $140.00
Our Price: $119.99
SALE PRICE: $67.99
In Stock
16" 5.56 / .223 1x7 GOVERNMENT 4150 CrMoV MELONITE NITRIDE BARREL - MID-LENGTH GAS 16" 5.56 / .223 1x7 GOVERNMENT 4150 CrMoV MELONITE NITRIDE BARREL - MID-LENGTH GAS
MSRP: $150.00
Our Price: $139.99
SALE PRICE: $89.99
In Stock

(11)
80 PERCENT ARMS GST-9 MOD1 80% LOWER RECEIVER G19 G19X G19L G17 - 38019-FDE GLOCK GST9 80% ARMS 80% ARMS GST-9 MOD1 80% LOWER RECEIVER G19 G19X G19L G17 - 38019-FDE
MSRP: $150.00
Our Price: $139.99
SALE PRICE: $124.99
(Out of Stock)
POLYMER80 80% POLYMER LOWER RECEIVER GLOCK 19 FITMENT - BLACK - P80-PF940CV1-BLK POLYMER80 80% LOWER RECEIVER COMPACT G19 / G23 PF940C P80-BKC-BLK - BLACK
MSRP: $150.00
Our Price: $109.99
SALE PRICE: $64.99
(Out of Stock)
(320)
POLYMER80 COMPACT 9MM BARREL GLOCK 19 FITMENT MELONITE NITRIDE - P80-BRL-PFC9-BLK POLYMER80 COMPACT 9MM BARREL GLOCK 19 FITMENT MELONITE NITRIDE - P80-BRL-PFC9-BLK
MSRP: $150.00
Our Price: $119.99
SALE PRICE: $59.99
In Stock

(4)
80 PERCENT ARMS GST-9 MOD1 80% LOWER RECEIVER G19 G19X G19L G17 - 38019-BLK GLOCK GST9 80% ARMS 80% ARMS GST-9 MOD1 80% LOWER RECEIVER G19 G19X G19L G17 - 38019-BLK
MSRP: $150.00
Our Price: $139.99
SALE PRICE: $124.99
(Out of Stock)
80% ARMS GST-9 MOD1 FULL SIZE GRIP G17 - 380005-BLK 80% ARMS GST-9 MOD1 FULL SIZE GRIP G17 - 380005-BLK
MSRP: $23.00
Our Price: $19.99
SALE PRICE: $17.99
(Out of Stock)
MAS DEFENSE 9MM COLD HAMMER FORGED STEEL BARREL - GLOCK 19 FITMENT - MELONITE NITRIDE MAS DEFENSE 9MM COLD HAMMER FORGED STEEL BARREL - GLOCK 19 FITMENT - MELONITE NITRIDE
MSRP: $130.00
Our Price: $109.99
SALE PRICE: $54.99
In Stock
80% ARMS GST-9 MOD1 FULL SIZE GRIP G17 - 380005-FDE 80% ARMS GST-9 MOD1 FULL SIZE GRIP G17 - 380005-FDE
MSRP: $23.00
Our Price: $19.99
SALE PRICE: $17.99
(Out of Stock)
SB TACTICAL SBA4 PISTOL STABILIZING BRACE 5-POSITION - SBA4-01-SB SBA4X-01-SB SB TACTICAL SBA4 ADJUSTABLE AR-15 PISTOL STABILIZING BRACE - BLACK - SBA4X-01-SB
MSRP: $125.00
Our Price: $99.99
SALE PRICE: $79.99
In Stock

(70)
POLYMER80 GLOCK 17 80% POLYMER LOWER RECEIVER BLACK -PF940v2-BLK POLYMER80 80% LOWER RECEIVER FULL SIZE G17 / G22 PF940V2 P80-BKS-BLK - BLACK
MSRP: $150.00
Our Price: $109.99
SALE PRICE: $64.99
In Stock

(112)
POLYMER80 RECOVER TACTICAL 20/80 STABILIZER BRACE FOR P80 GLOCK STYLE FRAMES - P80-20-80-BASIC ARM BRACE POLYMER80 RECOVER TACTICAL 20/80 STABILIZER BRACE FOR P80 GLOCK STYLE FRAMES - P80-20-80-BASIC
MSRP: $100.00
Our Price: $89.99
SALE PRICE: $49.99
(Out of Stock)
(4)
POLYMER80 FULL SIZE 9MM BARREL GLOCK 17 FITMENT MELONITE NITRIDE - P80-BRL-PFS9-BLK POLYMER80 FULL SIZE 9MM BARREL GLOCK 17 FITMENT MELONITE NITRIDE - P80-BRL-PFS9-BLK
MSRP: $150.00
Our Price: $119.99
SALE PRICE: $59.99
In Stock

(1)
SB TACTICAL SBA3X 5-POSITION ADJUSTABLE PISTOL STABILIZING BRACE BLACK - SBA3X-01-SB SBA3-01-SB SB TACTICAL SBA3 ADJUSTABLE AR-15 PISTOL STABILIZING BRACE - BLACK - SBA3X-01-SB
MSRP: $125.00
Our Price: $99.99
SALE PRICE: $79.99
In Stock

(77)