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™
AT3™ SPEAR M-LOK Handguard for AR-15 – 9, 12, & 15 inch Lengths
The AT3 SPEAR™ is our best, most secure handguard. Simple to install, lightweight, and easy on the wallet. The slim free-float design enhances accuracy while minimizing the weight of...24 Options -
Hexmag Shorty 10 Round Compliant AR-15 5.56 Magazine
10 Round AR-15 Magazine with 20 Round Look The "Shorty" 10/20 AR-15 Hexmag brings a 20 round look and feel, with a limited 10 round capacity for compliance with state...4 Options -
Hexmag Shorty 20 Round AR-15 5.56 Magazine
Compact 20 Round AR-15 Polymer Magazine The "Shorty" AR-15 Hexmag features modern polymer construction, improved feed lips, and a reliable anti-tilt follower. The magazine's unique Hexture™ design offers superior grip,...4 Options -
AT3™
AT3™ FF-ML Complete Rifle AR 15 Upper – .223/5.56 16″ Ballistic Advantage Barrel –...
16 Inch Lightweight AT3 Upper with 15 Inch Handguard - Made to Order and Ships in 7 Days AT3 Complete Upper assemblies are Built for Accuracy and Reliability - Guaranteed....16 Options -
AT3™
AT3™ Pro Quad Rails – Free Float AR15 Handguards – 4 Lengths Available
The New and Improved Pro Quad Rail - Lightweight, Rigid, and Easier to Install The quad rail is still the gold standard of secure accessory mounting, but they're in...28 Options -
Duramag Speed AR-15 30 Round Aluminum Magazine – .223/5.56 NATO
Affordable And Reliable Aluminum Magazine With Unequaled Durability The Duramag Speed 30 Round Aluminum Magazine is an improved USGI magazine that is battle-proven and lightweight making it a consistent magazine...10 Options -
AT3™
AT3™ Black Nitride 5.56 Bolt Carrier Group with Breek Arms Warhammer AR-15 Charging Handle
AT3 Black Nitride BCG + Breek Warhammer AR-15 Charging Handle The AT3 Tactical BCG and Breek Warhammer Charging Handle pair perfectly to complete your AR-15 upper receiver. Save on this...8 Options -
Hera H1 Gen 2 10 Round AR-15 Magazine
Hera USA H1 Gen 2 10 Round AR15 Magazine Made in Germany with high-impact grade polymer, the Hera H1 10 round magazine is a reliable choice to carry your ammo....3 Options -
Mission First Tactical Extreme Duty 30-Round AR 15 Magazine – .223 / 5.56 NATO...
Designed for Ergonomics and Maximum Reliability Mission First Tactical Offers a new and improved polymer in their Extreme Duty Polymer Magazine. Next-generation long glass fiber polymer is used in a...2 Options -
AT3™
AT3™ AR 15 Upper Receiver and SPEAR Handguard Combo
Getting Started on Your Next Build? Go Sleek and Lightweight with our Billet Upper and SPEAR M-LOK Handguard. The slim free-float design of the SPEAR handguard enhances accuracy while minimizing...24 Options -
AT3™
AT3™ Mil Spec Buffer Tube Kit For AR-15 – 10 Colors Available
The perfect kit for your next build - at a price that can't be beat. This Mil-Spec AR-15 Buffer Tube Kit includes the buffer tube, castle nut, lock plate, 3oz...10 Options -
Duramag Speed AR-15 20 Round Aluminum Magazine – .223/5.56 NATO
20 Round Curved Duramag with Anti-Tilt Follower The Duramag Speed 20 Round Aluminum Magazines follow the curve of full 30 round magazines. This allows these compact magazines to use full...9 Options -
Hera H3 Gen 2 30 Round AR-15 Magazine
Hera H3 Gen 2 30 Round AR-15 Magazine Made in Germany with high-impact grade polymer, the Hera H3 30 round magazine is a reliable choice to carry your ammo. Compatible...3 Options -
Lancer 30Rd L5AWM Advanced Warfighter AR 15 Magazine – .223 Rem/556NATO – Multiple Colors
Hybrid Polymer and Steel Magazine - Built Strong for Tough Action Lancer set out to design a better 5.56 magazine; one with the reliability of steel, durability of polymer and...12 Options -
Mission First Tactical 30 Round AR 15 Magazine
Standard Capacity Magazine - 30 Rounds in Black or FDE 30 round 5.56 NATO magazine engineered as an enhancement of the standard STANAG design. The MFT stipple texture, low profile...2 Options -
NEW
Anderson Manufacturing AM-15 Dissipator Upper Receiver with BCG and Charging Handle
Anderson Manufacturing AM-15 Dissipator Upper Receiver with BCG and Charging Handle The AM-15 Dissipator Upper Receiver by Anderson is a modern take on a classic, offering an enhanced shooting experience... -
NEW
KAK Industry K-SPEC Dual Ejector 5.56 NATO AR-15 Bolt
KAK Industry K-SPEC Dual Ejector 5.56 NATO AR-15 Bolt The K-SPEC Enhanced AR15 Bolt is a high-quality bolt designed specifically for the 5.56/300 Blackout caliber. It incorporates a dual ejector... -
Amend2 30 Round .223 Rem/5.56 NATO Magazine for AR15
Standard Capacity Magazine from Amend2 - 4 Colors Available The Amend2 30 round magazine is a sturdy, reliable 5.56x45 NATO (.223 Remington) AR15/M4/M16 magazine made of advance polymer material. It...5 Options -
UTG 30 Round 5.56 NATO Windowed Polymer AR 15 Magazine
A Durable And Reliable 30-Round Magazine For Extreme Conditions The UTG 30 Round 5.56 NATO Windowed Polymer Magazine is a lightweight and highly reliable magazine for AR-pattern rifles designed for... -
Duramag AR-15 Stainless Steel Magazine 20 Round – .223/5.56/300BLK
An Extremely Durable And Reliable Magazine Way Better than Aluminum And Polymer The Duramag AR-15 Stainless Steel Magazine – .223/5.56/300BLK is designed for performance and durability and crafted exclusively for... -
Duramag AR-15 Stainless Steel Magazine 10 Round – .223/5.56/300BLK
An Extremely Durable And Reliable Magazine Way Better than Aluminum And Polymer The Duramag AR-15 Stainless Steel Magazine – .223/5.56/300BLK is designed for performance and durability and crafted exclusively for... -
3-Pack – Magpul PMAG M3 10 Round AR 15 Magazine .223 / 5.56 NATO...
Buy in Bulk And Save! This Pack Includes Three (3) M3 10-Round Pmags This Magpul PMAG M3 is a 10-round magazine designed for the AR15/M4 platforms chambered in 5.56x45 NATO... -
6-Pack – Magpul PMAG M3 30 Round – .223 / 5.56 NATO – MAG557...
Buy In Bulk And Save! This Pack Includes Six (6) M3 30-Round Pmags The Magpul PMAG M3 is a next-generation 30-round 5.56x45 NATO (.223 Remington) polymer magazine for AR15/M4 compatible...2 Options -
Magpul AR 15 PMAG M3 30 Round – .223 / 5.56 NATO – MAG557
Next Generation 30-Round Magazine Enhanced For Strength And Reliability The Magpul PMAG M3 is a next-generation 30-round 5.56x45 NATO (.223 Remington) polymer magazine for AR15/M4 compatible weapons. Along with expanded...2 Options
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