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M - Z
***MAS DEFENSE***
MAGPUL
MISSION FIRST TACTICAL
NORSSO GLOCK SLIDES
NORTH SIDE KNIVES
POLYMER80
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5.56 NATO / .223
7.5" - 8" 5.56 NATO
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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
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ALL HANDGUARDS
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DROP IN
4"-5" PISTOL
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
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LOWER PARTS AND KITS
TRIGGERS
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RIFLES - STOCKS
80% LOWERS
POLYMER 80% LOWERS
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AR-9 LOWER PARTS
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AR-10 UPPER RECEIVERS
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AR-10 BCG's / CHARGING HANDLES
AR-10 HANDGUARDS
AR-10 GAS BLOCK / GAS TUBES
AR-10 MUZZLE DEVICES
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GLOCK 26/27 FRAME PARTS
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GLOCK 20/21 FRAME PARTS
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 16" 300 BLACKOUT BARRELED UPPER - YANKEE HILL 12.5" TJ SERIES
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0 of 0 people found the following review helpful:
16" 300 Blanckout barreled Upper
May 5, 2014
: Robert S
WOW!, Fast service and an absolutely flawless uppper! That being said, I would like to thank everyone I spoke to. Even with ALL my 'newbie' questions everyone was patient and professional. The team a MAS Defense took the time to direct me to their Sale Items. That action alone saved me a good chunk of change.
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0 of 0 people found the following review helpful:
Outstanding!
April 8, 2014
: John S
MAS Defense was exactly what I was looking for. Great customer support helping me decide what would meet my needs and budget. We decided on the TJ series full upper with bolt carrier group and charging handle with the tactile latch. I couldn't resist the Xtreem muzzle break. Shipping was fast and the upper was well protected. I can't wait to get out and put a few rounds down the melanite barrel. Thank you to the great staff of MAS defense.
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0 of 0 people found the following review helpful:
Amazing Upper w/ Quality Support
March 24, 2014
: Vincent I
This is a awesome looking 300 Blackout upper. Fit n Finish is of high quality. Adding options was easy as clicking a mouse button. I added the Nitrite barrel, Slick side option and finished it off with an internal fake can. Look as Great as it shoots. I got .887 MOA @ 50 yards out of my 125g spitzer reloads. Cant ask for any better of a job. Customer supports rocks. Answered all my question fast and direct. And was built and shipped out super fast. Thanks Mas Defence
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0 of 0 people found the following review helpful:
Owner
January 31, 2014
: Bill L
Very well made with an excellent value.
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