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MAS DEFENSE
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DEL-TON
FAXON FIREARMS
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M - Z
***MAS DEFENSE***
MAGPUL
MISSION FIRST TACTICAL
NORSSO GLOCK SLIDES
NORTH SIDE KNIVES
POLYMER80
ROCK RIVER ARMS
SB TACTICAL
SHOCKWAVE - KAK
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UTG / LEAPERS
AR-9
9MM BARRELED UPPERS
5.25" 9MM
8.3" 9MM
11" 9MM
16" 9MM
AR-9 BUILD KITS
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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
AR-15 BUILD KITS
AR-15 UPPER PARTS
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.223 WYLDE BARRELS
300 BLACKOUT BARRELS
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4"-5" PISTOL
7" CARBINE
9"-10" SPECTER
11"-13" RIFLE
15"+ EXT RIFLE
AR-15 GAS BLOCKS / TUBES
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1/2 x 28 TPI
1/2 x 36 TPI
5/8 x 24 TPI
THREAD CONVERTERS
AR-15 LOWER PARTS
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GRIPS
STOCKS - PISTOL BRACES
PISTOLS - ARM BRACES
RIFLES - STOCKS
80% LOWERS
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FORGED 80% LOWERS
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AR-10 BARRELED UPPERS
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AR-10 BCG's / CHARGING HANDLES
AR-10 HANDGUARDS
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***SALES***
HOLIDAY SALE
BLEM SALE
MAS DEFENSE
BALLISTIC ADVANTAGE
FAXON FIREARMS
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
SB TACTICAL
SHOCKWAVE - KAK
SYLVAN ARMS
UTG / LEAPERS
AR-9
9MM BARRELED UPPERS
5.25" 9MM
8.3" 9MM
11" 9MM
16" 9MM
AR-9 BUILD KITS
AR-9 UPPER PARTS
AR-9 LOWER PARTS
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
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
AR-15 BCG's / 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
GRIPS
STOCKS - PISTOL BRACES
PISTOLS - ARM BRACES
RIFLES - STOCKS
80% LOWERS
POLYMER 80% LOWERS
FORGED 80% LOWERS
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
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
76% - 80% FRAMES & JIGS
P80 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 SLIDE PARTS
SIG P320 FRAME PARTS
80% INSERTS & JIGS
SIGHTS
SIGHTS
OPTICS
TOOLS
TOOLS
KNIVES
SWAG
Return to AR-15 BOLT CARRIER GROUP 5.56 & 300 BLACKOUT BCG - MELONITE NITRIDE
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0 of 0 people found the following review helpful:
August 16, 2024
: Ron Page from South Deerfield , MA United States
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0 of 0 people found the following review helpful:
Great
July 10, 2024
: Lawrence Burke from Anchorage, AK United States
Smooth and good quality bcg
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0 of 0 people found the following review helpful:
June 13, 2024
: Johnny Rosado from Sunny Ilse, FL United States
This is really nice.
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0 of 0 people found the following review helpful:
Quality
March 6, 2024
: Frank Hicks from Rio Rancho, NM United States
Amazing quality and smooth as glass .
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0 of 0 people found the following review helpful:
Bcg
April 29, 2023
: Christopher McRobert from Silverlake, WA United States
I ordered my stuff in a hurry and they got my order out extremely fast. Thanks a lot. Oh also the bcg is amazing.
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0 of 0 people found the following review helpful:
Forced to purchase
January 10, 2023
: John Martin from Dayton, NV United States
MAS defense didnt tell me that their 18 inch barreled upper wouldnt function correctly if you didnt use a semi profile BCG. Hard to find elsewhere because nobody else uses them. BCG works like it should but still didnt correct BCG cycling problem with the MAS defense barreled upper. The support department was useless/ didnt help correct in any way.
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MAS Defense Reply: John, Your barreled upper using a Ballistic Advantage barrel was assembled using our 50 point checklist, head spaced and test fired to ensure 100% function before we sent it to you. We received your email advising of the problem and discussed several trouble shooting methods via email. We sent you an RMA label on 12/6 to get the upper back. You sent us an email on 12/21 stating you drilled out the gas port on the barrel and would not be returning it. We build thousands of uppers every year and provide our opinion on what the best parts to in combination with the upper would be. The upper should function with both a Semi and Auto profile BCG. Enlarging the gas port to flow more gas would fix the issue but should not have been necessary.
Thank you for your business and your feedback!
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0 of 0 people found the following review helpful:
BCG Works flawlessly
December 8, 2022
:
Had a previous BCG that was faulty and wasn't ejecting from another manufacturer and needed something more reliable. I couldn't have picked a better one if I tried. Shipping was fast and it works perfectly. Amazing product.
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0 of 0 people found the following review helpful:
Excellent
October 22, 2022
: Tyler Garza from Victoria , TX United States
Fast Shipping / Quality Product / Highly Recommended
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0 of 0 people found the following review helpful:
Great
September 27, 2022
: joe s from Mooresville , NC United States
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0 of 0 people found the following review helpful:
Good value, looks great
September 1, 2022
: David Stevenson from San Antonio, TX United States
The nitride finish looks great in my opinion. The MAS logo even looks nice and I'm usually not a fan of branding. Would buy again.
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