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***MAS DEFENSE***
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MISSION FIRST TACTICAL
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AR-15 BARRELED UPPERS
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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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7" CARBINE
9"-10" SPECTER
11"-13" RIFLE
15"+ EXT RIFLE
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1/2 x 28 TPI
1/2 x 36 TPI
5/8 x 24 TPI
THREAD CONVERTERS
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GRIPS
STOCKS - PISTOL BRACES
PISTOLS - ARM BRACES
RIFLES - STOCKS
80% LOWERS
POLYMER 80% LOWERS
FORGED 80% LOWERS
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AR-10 BARRELED UPPERS
AR-10 UPPER PARTS
AR-10 UPPER RECEIVERS
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AR-10 HANDGUARDS
AR-10 GAS BLOCK / GAS TUBES
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GLOCK 19/23 FRAME PARTS
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76% - 80% FRAMES & JIGS
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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 8.5" 300 BLACKOUT AR-15 BARRELED UPPER - MAS DEFENSE RIDGELINE 9.87" M-LOK RAIL
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1 of 1 people found the following review helpful:
Barreled upper
June 1, 2023
: Joel Uhl from Vassar, MI United States
I've ordered from you guys before and had good service. Processing is quick. I have no problems on your side. Fed ex however is another story. I still have not received my order, information is hard to get and their website navigation is lacking. Hopefully they get things straightened out soon.
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0 of 0 people found the following review helpful:
Amazing, Exactly what I was expecting!
October 14, 2022
: Jason D from OH United States
Well, I ordered the upper, a CH and a BCG. I was expecting the three items to be in the box like you would receive rom anywhere when ordering three different products. The people at MAS actually installed the CH and the BCG in the upper for me before they neatly wrapped and packaged the upper! Not to mention the upper is flawless and of excellent quality, especially for the price!
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0 of 0 people found the following review helpful:
Customer service
July 1, 2022
: Josh Erdman from Hamburg, NY United States
So I ordered 2 for fathers day last minute I received them and in fantastic condition once again amazing products to match there customer service
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0 of 0 people found the following review helpful:
First Time Customer
April 20, 2022
: K H from Ofallon, MO United States
Upper was was exactly what I expected. Packaged carefully and fast shipment! I would recommend Mas Defence and will use them again.
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0 of 0 people found the following review helpful:
Perfect match
February 25, 2022
: Peter Wallace from San Diego, CA United States
Loved how it turned out. The F.D.E.. color was my worry that it wouldn't match my lower ut it worked out perfect.
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0 of 0 people found the following review helpful:
8.5" upper
May 13, 2021
: Eric Smith from Coolidge, TX United States
Wow, wow wow I can't wait to finish getting this put together. Feels great in my hands and light.
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0 of 0 people found the following review helpful:
Excellent product
April 8, 2021
: Matt Smith from HONEY BROOK, PA United States
Product is as advertised. Can not wait to match it to my pistol lower.
Looking forward to rounds down range soon!
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0 of 0 people found the following review helpful:
300 Barreled upper
March 30, 2021
: Darren LaFevers from Us, NC United States
Great product at a great price. Thanks Mas
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0 of 0 people found the following review helpful:
June 3, 2020
: john smith from LEXINGTON, SC United States
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0 of 0 people found the following review helpful:
Arrived extremely fast
May 22, 2020
: from United States
Bought while traveling for work, and it went coast to coast in less than a week with standard shipping. The trusted individual I had it shipped to inspected it for me and said there's no blemishes, arrived exactly as described and they test fired it for me with no malfunctions. Can't remember what exact ammo they sent through it but it was 220 grain sub sonics that I had bought before I left. Will update when I get to try it for myself.
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