Black .223 and 5.56 AR-15 Parts

Need Black .223/5.56 AR Parts? AT3 has you covered – with fast & free shipping, hassle-free returns, and friendly customer service.

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AT3™ SPEAR M-LOK™ AR-15 Free Float Handguard - 9 inch Length

(719)

AT3™ SPEAR Free Float AR-15 Handguard – 9, 12, & 15 Inch – M-LOK

RECOMMENDED

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(9)

AT3™ AT-15 M-LOK Builder Set – Anodized and Cerakote

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Black Warhammer with BCG

(54)

AT3™ Black Nitride 5.56 Bolt Carrier Group with Breek Arms Warhammer AR-15 Charging Handle

(12)

Hexmag Shorty Compliant .223/5.56 NATO AR-15 Magazine – 10 Round

DAILY DEAL

AT3 Pro Quad Rail - 7" Black

(304)

AT3™ Pro Quad Rail Free Float AR-15 Handguard – 7, 9, 12, & 15 Inch – Picatinny

Save 20%

(9)

Hexmag Shorty .223/5.56 NATO AR-15 Magazine – 20 Round

RECOMMENDED

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AT3 Tactical AT-15 Quad Rail Builder Set - Upper, Lower, and Handguard - 15 Inch - Black

(6)

AT3™ AT-15 Quad Rail Builder Set – Anodized and Cerakote

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Spare 5.56 Bolt in Black Nitride

(9)

AT3™ AR-15 Replacement Bolt – 5.56 NATO/.300 Blackout – Black Nitride

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(1)

AT3 Tactical AR-15 Barrel – 16″ – 5.56 NATO – Government Profile – Mid-length

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(1)

AT3 Tactical AR-15 Barrel – 16″ – 5.56 NATO – Pencil Profile – Mid-length

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(2)

AT3 Tactical AR-15 Barrel – 7.5″ – 5.56 NATO – Medium Profile – Pistol Length

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AT3 Tactical AR-15 Barrel – 14.5″ – 5.56 NATO – Government Profile – Mid-Length

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AT3 Tactical AR-15 Barrel – 13.9″ – 5.56 NATO – Pencil Profile – Mid-Length

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AT3 Tactical AR-15 Barrel – 14.5″ – 5.56 NATO – Pencil Profile – Mid-Length

DAILY DEAL

(4)

Troy Battlemag .223/5.56 NATO AR-15 Magazine – 30 Round

Save 24%

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AT3™ 10.5 Inch Complete AR-15 Pistol Upper - 10.5 Inch Faxon .223/5.56 SOCOM Barrel - With Nickel Boron BCG and Mil-Spec CH

AT3™ .223/5.56 10.5″ Complete Assembled AR-15 Upper – With Nickel Boron BCG and Charging Handle

Sale!

AT3 Tactical Spear M-LOK Free Float Handguard 9 Inch with Slick Side Billet Upper Receiver

(160)

AT3™ AR-15 Upper Receiver and SPEAR Handguard Combo

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OPEN BOX RETURN - AT3™ Mil Spec Buffer Tube Kit - AR-15

(91)

AT3™ Mil Spec Buffer Tube Kit For AR-15 – 9 Colors Available

Duramag Speed AR-15 30 Round Aluminum Magazine - .223/5.56 NATO - Black Follower

(34)

Duramag Speed .223/5.56 NATO AR-15 Magazine – Aluminum – 30 Round – Black Follower

SB Tactical HBPDW AR-15 Pistol Brace

(6)

SB Tactical HBPDW AR-15 Pistol Brace

(11)

Bear Creek Arsenal 5.56/.223 / .300 Blackout / .350 Legend AR-15 Bolt Carrier Group – Nitride

RECOMMENDED

KAK Industry K-SPEC AR-15 Bolt Carrier Group with Side Vents for 5.56 - Chrome Lined Phosphate

(9)

KAK Industry K-SPEC Downward Venting 5.56 BCG with Dual Ejector Bolt

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AT3™ Upper Receiver and Pro Quad Rail Handguard Combo

(19)

AT3™ AR-15 Upper Receiver and Pro Quad Rail Handguard Combo

Magpul PMAG M3 30 Round Window - .223 / 5.56 NATO - MAG556

(43)

6-Pack – Magpul PMAG M3 w/Window .223/5.56 NATO AR-15 Magazine – 30 Round