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***MAS DEFENSE***
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NORSSO GLOCK SLIDES
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5.56 NATO / .223
7.5" - 8" 5.56 NATO
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.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
10.5" 300 AAC BLACKOUT
16" 300 AAC BLACKOUT
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5.25" 9MM
8.3" 9MM
11" 9MM
16" 9MM
AR-15 BUILD KITS
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1/2 x 28 TPI
1/2 x 36 TPI
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80% LOWERS
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AR-9 LOWER PARTS
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80% FRAMES & JIGS
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***SALES & SPECIALS***
BLEM SALE
MAS DEFENSE
BALLISTIC ADVANTAGE
FAXON FIREARMS
FRANKLIN ARMORY
G-FLEX TRIGGERS
MAGPUL
MISSION FIRST TACTICAL
NORSSO GLOCK SLIDES
POLYMER80
ROCK RIVER ARMS
SB TACTICAL
SYLVAN ARMS
UTG / LEAPERS
BRANDS
A - L
5D TACTICAL
80% ARMS
AERO PRECISION
BALLISTIC ADVANTAGE
DEL-TON
FAXON FIREARMS
FRANKLIN ARMORY
G-FLEX TRIGGERS
GEISLER DEFENCE
HOLOSUN
JSD SUPPLY
M - Z
***MAS DEFENSE***
MAGPUL
MISSION FIRST TACTICAL
NORSSO GLOCK SLIDES
NORTH SIDE KNIVES
POLYMER80
ROCK RIVER ARMS
ROOK TACTICAL
SB TACTICAL
SHOCKWAVE - KAK
SYLVAN ARMS
UTG / LEAPERS
AR-15
AR-15 BARRELED UPPERS
5.56 NATO / .223
7.5" - 8" 5.56 NATO
10.5" 5.56 NATO
11.5" 5.56 NATO
13.9" 5.56 NATO
14.5" 5.56 NATO
16" 5.56 NATO
18" 5.56 NATO
.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
10.5" 300 AAC BLACKOUT
16" 300 AAC BLACKOUT
9MM
5.25" 9MM
8.3" 9MM
11" 9MM
16" 9MM
AR-15 BUILD KITS
AR-15 UPPER PARTS
AR-15 UPPER RECEIVERS
AR-15 BARRELS
5.56 NATO BARRELS
.223 WYLDE BARRELS
300 BLACKOUT BARRELS
9MM BARRELS
AR-15 BCG's / CHARGING HANDLES
BOLT CARRIER GROUPS
CHARGING HANDLES
HANDGUARDS
ALL HANDGUARDS
ACCESSORIES
DROP IN
4"-5" PISTOL
7" CARBINE
9"-10" SPECTER
11"-13" RIFLE
15"+ EXT RIFLE
AR-15 GAS BLOCKS / TUBES
AR-15 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
PISTOLS - ARM BRACES
RIFLES - STOCKS
80% LOWERS
POLYMER 80% LOWERS
FORGED 80% LOWERS
BILLET 80% LOWERS
AR-9 LOWER PARTS
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
GLOCK SLIDE PARTS
GLOCK BARRELS
G26 BARRELS
G19 BARRELS
G17 BARRELS
G34 BARRELS
G23 BARRELS
G22 BARRELS
GLOCK SLIDES & PARTS
G43 SLIDES & PARTS
G26 SLIDES & PARTS
G19 SLIDES & PARTS
G17 SLIDES & PARTS
GLOCK FRAME PARTS
GLOCK 43 FRAME PARTS
GLOCK 26/27 FRAME PARTS
GLOCK 19/23 FRAME PARTS
GLOCK 17/22 FRAME PARTS
GLOCK 20/21 FRAME PARTS
80% FRAMES & JIGS
G43 SINGLE STACK
G26/27 SUB-COMPACT
G19/23/32 COMPACT
G17/22 FULL SIZE
G20/21 SF XL SIZE
SIG P320
SIG P320 UPPER PARTS
SIG P320 FRAME PARTS
80% INSERTS & JIGS
SIGHTS
SIGHTS
OPTICS
TOOLS
TOOLS
KNIVES
SWAG
Return to AR-9 9MM BOLT CARRIER GROUP - GLOCK AND COLT BCG - MELONITE NITRIDE
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0 of 0 people found the following review helpful:
9mm bolt carrier group
July 18, 2022
: from Albany, GA United States
great quality and packaging.
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0 of 0 people found the following review helpful:
Love this BCG
July 12, 2022
: Aaron Edwards from Stockton, CA United States
Love it … great for the money
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0 of 0 people found the following review helpful:
June 29, 2022
: Damien Anderson from San Bernardino, CA United States
Everything looks good on it I was wondering why does it not have the black rubber piece that goes in the back of it and where do I get it from to buy it for eight and not the one for the folding stock
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0 of 0 people found the following review helpful:
9mm BCG
June 28, 2022
: Stephen Mirau from Sandy, OR United States
Had to put in a new BCG when the one I bought from a different company wouldn’t work with my foldable stock. The BCG from Mas Defense was plug & play. Dropped it in…ready to go. Very nice!
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0 of 0 people found the following review helpful:
June 26, 2022
: Wil Santiago from west haven, CT United States
Super nice!!!
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0 of 0 people found the following review helpful:
BCG
June 10, 2022
: Tim Buckner from Leicester, NC United States
So far so good.
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0 of 0 people found the following review helpful:
5 🌟 🌟 🌟 🌟 🌟 !
June 1, 2022
: Eric Ruvalcaba from San Dimas, CA United States
Thank you Mas Defense! I have bought other of your products even through other websites. I love my G19 SLIDE ALONG WITH THE BCG FOR THE AR9 BUILD.
I SHARED WITH MY COUSIN AND HE BOUGHT A SLIDE ALSO AND IT CAME OUT BAD ASS!
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0 of 0 people found the following review helpful:
May 7, 2022
: Gordon Grasser from Longview, WA United States
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0 of 0 people found the following review helpful:
Quality
April 30, 2022
: J from ME United States
The machining appears of good workmanship. Just wish that MAS carried extra firing pins and spring. Like to have spares on hand.
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0 of 0 people found the following review helpful:
April 15, 2022
: from AMES, IA United States
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