Welcome.

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


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SHIPPING

Approximate Lead Times:

Parts (1-3) BUSINESS days. 

Barreled Uppers (1-3) BUSINESS days.

E-mails can take 24-48 hours to respond to at this time.

Orders CANNOT be cancelled once they reach the "processing" stage.

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STATE & AGE RESTRICTIONS

Please click HERE for updated information.

- Fraud Policy

- Banned States, Cities, Boroughs etc.

- Age Requirement

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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 CANNOT 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 driver's license to confirm their identity. Once confirmed, customers will not have to resubmit on future orders. 

FEATURED PRODUCTS



POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE BURNT BRONZE COPPER P80-PS9C-STD-BN-CKBRBNZ P80-PS9C-STD-BN P80 COMPACT G19 POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE BURNT BRONZE
MSRP: $315.00
Our Price: $254.99
SALE PRICE: $119.99
In Stock
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C BLACK NITRIDE - RMR OPTIC CUT - P80-PS9C-OCS-BN G17 STANDARD FULL SIZE POLYMER80 9MM STRIPPED SLIDE SIG P320 COMPACT FITMENT P80 BLACK NITRIDE - RMR OPTIC CUT - P80-PS320-C-OCS-BN
MSRP: $300.00
Our Price: $264.99
SALE PRICE: $164.99
In Stock
POLYMER80 80% POLYMER LOWER RECEIVER GLOCK 17 FITMENT - CRIMSON RED - P80-PF940V2-CKCRRED GCA STANDARD G17 / G22 76% BRIDGE FRAME POLYMER80 76% BRIDGE FRAME GCA STANDARD G17 / G22 - FRAME, PINS, REAR RAIL - CERAKOTE CRIMSON RED
MSRP: $170.00
Our Price: $149.99
SALE PRICE: $79.99
In Stock

(2)
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE BATTLEWORN CRIMSON RED MPN: P80-PS9C-STD-BN-CKCRRED COMPACT G19 DISTRESSED P80 POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE BATTLEWORN CRIMSON RED
MSRP: $345.00
Our Price: $274.99
SALE PRICE: $99.99
In Stock
POLYMER80 80% POLYMER LOWER RECEIVER GLOCK 17 FITMENT - WHITE - P80-PF940V2-CKWHT GCA STANDARD G17 / G22 76% BRIDGE FRAME POLYMER80 76% BRIDGE FRAME GCA STANDARD G17 / G22 - FRAME, PINS, REAR RAIL - CERAKOTE WHITE
MSRP: $170.00
Our Price: $149.99
SALE PRICE: $79.99
In Stock

(2)
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE AZTEC TEAL TURQUOISE P80-PS9C-STD-BN-CKAZTEL P80-PS9C-STD-BN P80 COMPACT G19 POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE AZTEC TEAL
MSRP: $315.00
Our Price: $254.99
SALE PRICE: $119.99
In Stock
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 CERAKOTE MULTICAM RED COMPACT G19 MULTI-CAM MULTI CAM CAMO P80-PS9C-STD-BN POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE MULTICAM RED
MSRP: $400.00
Our Price: $339.99
SALE PRICE: $99.99
(Out of Stock)
(1)
POLYMER80 PF320 PTEX GRIP MODULE / FRAME FOR SIG SAUER P320 - P80-PF320-BLK POLYMER80 PF320 PTEX GRIP MODULE / FRAME FOR SIG SAUER P320 - P80-PF320-BLK - BLACK
MSRP: $64.00
Our Price: $59.99
SALE PRICE: $49.99
In Stock

(4)
POLYMER80 80% POLYMER LOWER RECEIVER GLOCK 19 FITMENT - CERAKOTE NRA BLUE - P80-PF940CV1-CKNRBLU GCA COMPLIANT 76% BRIDGE FRAME POLYMER80 76% BRIDGE FRAME GCA COMPLIANT COMPACT G19 / G23 - FRAME, PINS, REAR RAIL - CERAKOTE NRA BLUE
MSRP: $170.00
Our Price: $149.99
SALE PRICE: $99.99
In Stock

(2)
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE WHITE MPN: P80-PS9C-STD-BN-CKWHT COMPACT G19 POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE WHITE
MSRP: $315.00
Our Price: $254.99
SALE PRICE: $99.99
In Stock

(3)
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE SNIPER GRAY GREY P80-PS9C-STD-BN-CKSNGRY P80-PS9C-STD-BN P80 COMPACT G19 POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE SNIPER GRAY
MSRP: $315.00
Our Price: $254.99
SALE PRICE: $119.99
In Stock
SIG SAUER P320 FRAME PARTS KIT LPK FLAT TRIGGER - 9MM / .40 S&W / .357 SIG LOWER PARTS KIT MAS DEFENSE SIG SAUER P320 - FLAT TRIGGER FRAME PARTS KIT 9MM / .40 S&W / .357 SIG
MSRP: $150.00
Our Price: $139.99
SALE PRICE: $119.99
In Stock

(3)
POLYMER80 80% POLYMER LOWER RECEIVER GLOCK 19 FITMENT - BLACK - P80-PF940CV1-BLK GCA COMPLIANT 76% BRIDGE FRAME POLYMER80 76% BRIDGE FRAME WITH 80% ARMS RAIL KIT - COMPACT G19 / G23 - BLACK 80PA KIT
MSRP: $190.00
Our Price: $169.99
SALE PRICE: $129.99
In Stock

(63)
AR-15 EZ PULL EXTENDED TAKEDOWN PIN SET GEN2 AR-15 EZ PULL EXTENDED TAKEDOWN PIN SET GEN2
MSRP: $20.00
Our Price: $17.99
SALE PRICE: $14.99
In Stock

(172)
POLYMER80 SUB-COMPACT 9MM BARREL GLOCK 26 FITMENT - THREADED FLUTED GOLD TIN P80-PFSC9-TH-F-TIN P80-BRL-PFSC9-THF-TIN POLYMER80 SUB-COMPACT 9MM BARREL GLOCK 26 FITMENT - THREADED FLUTED GOLD TIN P80-BRL-PFSC9-THF-TIN
MSRP: $195.00
Our Price: $179.99
SALE PRICE: $59.99
In Stock

(1)
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE BATTLEWORN NRA BLUE MPN: P80-PS9C-STD-BN-CKNRBLUE COMPACT G19 DISTRESSED P80 POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE BATTLEWORN NRA BLUE
MSRP: $345.00
Our Price: $274.99
SALE PRICE: $129.99
(Out of Stock)
(1)
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE BATTLEWORN BRIGHT PURPLE P80-PS9C-STD-BN-CKBRPUR P80-PS9C-STD-BN P80 COMPACT G19 DISTRESSED POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE BATTLEWORN BRIGHT PURPLE
MSRP: $345.00
Our Price: $274.99
SALE PRICE: $99.99
In Stock

(1)
JSD MUP-1 80% P320 FRAME INSERT FOR SIG SAUER® P320 MODULAR CHASSIS JSD SUPPLY MUP-1 80% FRAME INSERT FOR SIG SAUER® P320 MODULAR CHASSIS - MUP-1
MSRP: $170.00
Our Price: $149.99
SALE PRICE: $124.99
(Out of Stock)
(23)
POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE ZOMBIE GREEN P80-PS9C-STD-BN-CKZBGRN P80-PS9C-STD-BN P80 COMPACT G19 POLYMER80 9MM STRIPPED SLIDE GLOCK 19 FITMENT GEN 3 P80 PF940C P80-BKC - CERAKOTE ZOMBIE GREEN
MSRP: $315.00
Our Price: $254.99
SALE PRICE: $99.99
In Stock

(1)
POLYMER80 GLOCK 17 80% POLYMER LOWER RECEIVER BLACK -PF940v2-BLK POLYMER80 76% BRIDGE FRAME GCA COMPLIANT STANDARD G17 / G22 - FRAME, PINS, REAR RAIL - BLACK
MSRP: $150.00
Our Price: $129.99
SALE PRICE: $79.99
In Stock

(36)
POLYMER80 9MM STRIPPED SLIDE GLOCK 17 FITMENT GEN 3 CERAKOTE MULTICAM ZOMBIE GREEN STANDARD G17 MULTI-CAM MULTI CAM CAMO P80-PS9-STD-BN POLYMER80 9MM STRIPPED SLIDE GLOCK 17 FITMENT GEN 3 P80 PF940V2 P80-BKS - CERAKOTE MULTICAM ZOMBIE GREEN
MSRP: $400.00
Our Price: $339.99
SALE PRICE: $99.99
In Stock
SIG SAUER P320 COMPACT / XCARRY FACTORY RECOIL SPRING - 9MM - 1300985-R SIG SAUER P320 COMPACT / XCARRY FACTORY RECOIL SPRING - 9MM - 1300985-R
MSRP: $45.00
Our Price: $39.99
SALE PRICE: $29.99
In Stock

(3)
POLYMER80 80% POLYMER LOWER RECEIVER GLOCK 19 FITMENT - BLACK - P80-PF940CV1-BLK GCA COMPLIANT 76% BRIDGE FRAME POLYMER80 76% BRIDGE FRAME GCA COMPLIANT COMPACT G19 / G23 - FRAME, PINS, REAR RAIL - BLACK
MSRP: $150.00
Our Price: $129.99
SALE PRICE: $79.99
In Stock

(93)
POLYMER80 SUB-COMPACT 9MM BARREL GLOCK 26 FITMENT THREADED FLUTED DLC P80-PFSC9-THF-DLC P80-BRL-PFSC9-THF-DLC POLYMER80 SUB-COMPACT 9MM BARREL GLOCK 26 FITMENT THREADED FLUTED DLC P80-BRL-PFSC9-THF-DLC
MSRP: $185.00
Our Price: $169.99
SALE PRICE: $69.99
In Stock

(3)