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16" 300 AAC BLACKOUT
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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 M16 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - PHOSPHATE CHROME
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0 of 0 people found the following review helpful:
Great BCG
May 28, 2018
: Duane R
Great BCG at a great price
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0 of 0 people found the following review helpful:
High quality bcg
April 8, 2018
: Thurmon G
I've been using mas parts for several years now and I've come to expect a great quality part from them. This one is certainly no different. The same great quality that I continue to get time and time again.
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0 of 0 people found the following review helpful:
Great 300 upper for your piston build!
December 18, 2017
: Randy D
If you're looking to build a 300 Blackout Pistol or SBR, this is a great start to your project!
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0 of 0 people found the following review helpful:
M16 9310 BGC
March 11, 2017
: George S
High quality BGC. Staked properly, Hard Chrome Lined Carrier and can't beat the price of this quality unit.Thanks MAS Defense!George Savoix MI.
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0 of 0 people found the following review helpful:
M16 9310 BOLT CARRIER GROUP - 5.56 & 300 BLACKOUT
January 7, 2017
: Timothy H
Ordered this BCG to compliment my 7.5" 5.56 / .223 BARRELED UPPER - GTHD 7.2" KEYMOD and it fits like a glove. BCG came in less than a week as did the Upper. Both are great quality and workmanship. Would definitely recommend MAS Defense to anyone in the market for quality components.
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0 of 0 people found the following review helpful:
BCG
January 1, 2017
: ricardo s
Perfect
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0 of 0 people found the following review helpful:
BCG
December 15, 2016
: Howard C
Perfect fit and finish. Every time I do a build I order from these guys! Fast shipping and awesome quality products all the way around!
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0 of 0 people found the following review helpful:
Carrier
November 20, 2016
: Fred O
Ordered this with my 300 upper and it works great, will definitely order from the in the future!!
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0 of 0 people found the following review helpful:
Masdefense bcg
November 5, 2016
: Ed R
Shipped quickly. Very happy with this bcg. Bolt was not stiff at all and finish is better than advertised. Staked properly. Going to use this on a 300 blkout pistol. Next bcg will be ordered from Mas.I think I'm done ordering from the competition from the state just south of you guys.
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0 of 0 people found the following review helpful:
Great Price
October 21, 2016
: Jake L
This is a great BCG for the price. Fast shipping. No complaints at all. I would buy again.
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