.223 and 5.56 AR-15 Parts
Great Deals on .223/5.56mm AR Parts
Enjoy great savings when you buy high-quality .223/5.56mm AR 15 parts from AT3 Tactical
We offer a variety of products for the .223/5.56mm AR variants.
Whether you need to upgrade your .223/5.56 AR 15 by getting AR 15 Handguards, AR 15 Barrels, Magazines, or Muzzle Devices, we’ve got you covered.
All of the products on this page are made for the .223/5.56mm AR variants. If you have any questions about the fit of a part to your specific weapon, please contact us and we are glad to help.
- Barrels - .223/5.56 (142)
- Muzzle Devices - .223/5.56 (123)
- Magazines - .223/5.56 (87)
- Handguards & Rails - .223/5.56 (39)
- Bolt Carrier Groups - .223/5.56 (38)
- Complete Upper Assemblies - .223/5.56 (35)
- AR-15 Build Kits and Assemblies - .223/5.56 (30)
- Lower Receivers - .223/5.56 (23)
- Rifles - .223/5.56 (19)
- Lower Receiver Parts - .223/5.56 (8)
- Tools & Cleaning - .223/5.56 (8)
- Uppers & Parts - .223/5.56 (7)
- Buffer Tube Parts - .223/5.56 (6)
- Triggers - .223/5.56 (5)
- Sling Mounts - .223/5.56 (4)
- Charging Handles - .223/5.56 (3)
- Laser Bore Sights - .223/5.56 (2)
- Front Grips - .223/5.56 (2)
- All Other Products - .223/5.56 (1)
- Scopes - .223/5.56 (1)
- White Sound Defense - .223/5.56 (1)
- Desert Tech - .223/5.56 (3)
- Battle Arms Development - .223/5.56 (4)
- Griffin Armament - .223/5.56 (6)
- LBE Unlimited - .223/5.56 (11)
- Geissele - .223/5.56 (9)
- Anderson Manufacturing - .223/5.56 (10)
- Armaspec - .223/5.56 (7)
- Hexmag - .223/5.56 (8)
- KAK Industry - .223/5.56 (14)
- Amend2 Caliber 223 556 (5)
- A-Zoom - .223/5.56 (2)
- Midwest Industries - .223/5.56 (13)
- AT3 Tactical - .223/5.56 (35)
- Faxon Firearms - .223/5.56 (40)
- Ballistic Advantage - .223/5.56 (33)
- Aero Precision - .223/5.56 (18)
- Black - .223/5.56 (245)
- Flat Dark Earth - .223/5.56 (67)
- OD Green - .223/5.56 (51)
- Stainless - .223/5.56 (32)
- Gray - .223/5.56 (30)
- Pink - .223/5.56 (20)
- .223/5.56 - Red (19)
- Burnt Bronze - .223/5.56 (17)
- Titanium - .223/5.56 (16)
- Tungsten - .223/5.56 (15)
- Translucent Smoke - .223/5.56 (10)
- Tan - .223/5.56 (9)
- Purple - .223/5.56 (8)
- .223/5.56 - Blue (8)
- Clear - .223/5.56 (5)
- Coyote Tan - .223/5.56 (4)
- Gold - .223/5.56 (4)
- Silver - .223/5.56 (4)
- Multicam - .223/5.56 (3)
- Translucent Dark Earth - .223/5.56 (3)
- Foliage Green - .223/5.56 Parts (2)
- Brown - .223/5.56 (2)
- Desert Tan - .223/5.56 (2)
- Ghillie Green - .223/5.56 (2)
- Green - .223/5.56 (2)
- Translucent OD Green - .223/5.56 (1)
- Ranger Green - .223/5.56 (1)
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RECOMMENDEDNEW
STNGR 16″ .223 Wylde Complete Upper Receiver w/ 15″ VYPR® Handguard, BCG & CH
STNGR Complete .223 Wylde Upper with VYPR Handguard The VYPR complete upper from STNGR has everything you need to take a complete lower to a full rifle fast. Perfect for...3 Options3 Options3 Options -
RECOMMENDEDNEW
STNGR 16″ .223 Wylde Complete Upper Receiver w/ 15″ VLCN® Handguard, BCG & CH
STNGR Complete .223 Wylde Upper with VLCN Handguard The VLCN complete upper from STNGR has everything you need to take a complete lower to a full rifle fast. Perfect for...3 Options3 Options3 Options -
RECOMMENDEDNEW
STNGR 16″ .223 Wylde Complete Upper Receiver w/ 15″ RPTR® Handguard, BCG & CH
STNGR Complete .223 Wylde Upper with RPTR Handguard The RPTR complete upper from STNGR has everything you need to take a complete lower to a full rifle fast. Perfect for...3 Options3 Options3 Options -
RECOMMENDED
Hexmag Series 2 5.56 30rd AR 15 Magazine
An All-around Magazine for Any Shooter - Lightweight and Extremely Durable The Hexmag Series 2 5.56 30rd Magazine is the next generation in AR-15 Magazines featuring the iconic Hexture™ design...4 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 -
AT3™NEW
AT3™ AT-15 M-LOK Receiver Set – Anodized and Cerakote
https://www.youtube.com/watch?v=ufCPWjxhJ2Q AT3 Tactical AR-15 M-LOK Receiver Set Get your custom Cerakote AR build started with the sleek AT3 Tactical M-LOK Receiver set. This kit includes the new AT-15 Lower Receiver...24 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 -
NEW
Breek Arms Twin Port Muzzle Brake for Breek-LOK
Breek-LOK Twin Port Muzzle Brake: Recoil Crushing Force The Breek-LOK Twin Port Muzzle Brake was precision-engineered to harness and redirect propellant gases, delivering dramatic recoil reduction and laser-flat muzzle control....4 Options4 Options4 Options -
NEW
Breek Arms Triplet Flash Hider for Breek-LOK
Quick Attach Companion - Breek-LOK Triplet Flash Hider The Breek-LOK Triplet Flash Hider is a low-profile muzzle device designed to pair with the Breek-LOK quick detach suppressor mounting system. Its...4 Options4 Options4 Options -
AT3™NEW
AT3™ AT-15 Quad Rail Receiver Set – Anodized and Cerakote
https://www.youtube.com/watch?v=ufCPWjxhJ2Q AT3 Tactical AR-15 Cerakote Quad Rail Receiver Set Start your next AR build build with a rock solid foundation, and ready for your custom touch with Cerakote or anodized...32 Options32 Options32 Options -
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...27 Options -
NEW
KCI USA Polymer 30 Round Magazine w/Window for AR-15 – .223/5.56 Nato
KCI USA AR-15 30-Round Polymer Magazine: Lightweight 5.56/.223 Performance with Visual Round Count Enhance your AR-15 platform with KCI USA's durable 30-round polymer magazine. Constructed from a proprietary polymer blend,... -
NEW
KCI USA Aluminum 30 Round Magazine for AR-15 – .223/5.56 Nato
KCI USA AR-15 30-Round Aluminum Magazine: Lightweight 5.56/.223 Reliability Upgrade your AR-15 platform with KCI USA's durable 30-round aluminum magazine. Crafted from 6061 aluminum with a mil-spec anodized finish, this... -
Magpul 30-Round Magazine Bulk AR 15 PMAGS M2 – .223 / 5.56 NATO –...
Buy in Bulk And Save! M2 MOE 30-Round Pmags Are Now Available in 2, 3, 6, 10, 25, 50, and 100 Packs The Magpul PMAG 30 Round M2 MOE Mag...8 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...32 Options -
NEW
KCI USA 100 Round Drum Magazine for AR-15 – .223/5.56 NATO
KCI USA AR-15 100-Round Drum Magazine: Massive 5.56/.223 Capacity! Maximize your AR-15's firepower with KCI USA's Gen 2 Drum Magazine. This high-capacity 100-round drum features dual independent follower belts for... -
NEW
KCI USA 50 Round Drum Magazine for AR-15 – .223/5.56 Nato
KCI USA AR-15 50-Round Drum Magazine: High-Capacity 5.56/.223 Performance Maximize your AR-15's firepower with KCI USA's robust 50-round drum magazine. Featuring a clear polymer body for easy ammunition monitoring and... -
Magpul Cerakote 30 Round PMAG AR-15 Magazine – FDE, ODG, and Pink Coated by...
Flat Dark Earth PMAGs and More - Cerakote by AT3 Our customers have been asking for years about Magpul Flat Dark Earth PMAGs, and other colors Magpul discontinued. Now, they're...4 Options -
NEW
KCI USA Translucent 30 Round Magazine for AR-15 – .223/5.56 Nato
KCI USA 30-Round AR-15 Magazine: Enhanced Capacity with Clear Visibility This KCI USA magazine boosts your AR-15 platform's capacity to 30 rounds of 5.56x45mm or .223 Remington ammunition. Engineered with... -
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 -
NEW
Luth-AR Forged A2 Assembled AR-15 Upper Receiver
Luth-AR A2 Upper: Classic AR-15 Style - Fully Assembled & Ready! Embrace the iconic A2 design with Luth-AR's Forged A2 Assembled AR-15 Upper Receiver. This meticulously crafted upper brings timeless... -
NEW
Faxon Firearms Muzzlok 5.56 Ported Flash Hider
Faxon Firearms MuzzLok 5.56 Ported Flash Hider The Faxon Firearms Muzzlok 5.56 Ported Flash Hider is an innovative muzzle device designed for 5.56 caliber firearms. The Faxon MuzzLok system offers... -
NEW
Foxtrot Mike 16″ Side Charging AR-15 Upper Reciever – .223 Wylde – Black
Foxtrot Mike 16" Side Charging AR-15 Upper Receiver: Versatile AR-15 Performance This Foxtrot Mike upper receiver offers a unique side-charging design and .223 Wylde chambering for enhanced versatility and ergonomics....
Great Deals on .223/5.56mm AR Parts
Enjoy great savings when you buy high-quality .223/5.56mm AR 15 parts from AT3 Tactical
We offer a variety of products for the .223/5.56mm AR variants.
Whether you need to upgrade your .223/5.56 AR 15 by getting AR 15 Handguards, AR 15 Barrels, Magazines, or Muzzle Devices, we’ve got you covered.
All of the products on this page are made for the .223/5.56mm AR variants. If you have any questions about the fit of a part to your specific weapon, please contact us and we are glad to help.