.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. READ MORE
- Barrels - .223/5.56 (136)
- Muzzle Devices - .223/5.56 (107)
- Magazines - .223/5.56 (79)
- Handguards & Rails - .223/5.56 (39)
- Bolt Carrier Groups - .223/5.56 (37)
- Complete Upper Assemblies - .223/5.56 (31)
- AR-15 Build Kits and Assemblies - .223/5.56 (25)
- Rifles - .223/5.56 (19)
- Lower Receivers - .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)
- Dead Air Armament - .223/5.56 (3)
- Amend2 Caliber 223 556 (4)
- Breek Arms - .223/5.56 (6)
- LBE Unlimited - .223/5.56 (11)
- Geissele - .223/5.56 (9)
- Armaspec - .223/5.56 (7)
- Daniel Defense - .223/5.56 (5)
- Hexmag - .223/5.56 (8)
- A-Zoom - .223/5.56 (2)
- KAK Industry - .223/5.56 (13)
- Magpul - .223/5.56 (35)
- Faxon Firearms - .223/5.56 (39)
- Ballistic Advantage - .223/5.56 (33)
- AT3 Tactical - .223/5.56 (27)
- Anderson Manufacturing - .223/5.56 (10)
- Aero Precision - .223/5.56 (16)
- Black - .223/5.56 (208)
- Flat Dark Earth - .223/5.56 (59)
- OD Green - .223/5.56 (45)
- Stainless - .223/5.56 (30)
- Gray - .223/5.56 (30)
- Pink - .223/5.56 (18)
- Burnt Bronze - .223/5.56 (15)
- Titanium - .223/5.56 (14)
- Tungsten - .223/5.56 (13)
- Tan - .223/5.56 (9)
- .223/5.56 - Red (7)
- .223/5.56 - Blue (7)
- Purple - .223/5.56 (7)
- Translucent Smoke - .223/5.56 (7)
- 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)
- Clear - .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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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 -
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 -
Magpul 30-Round Bulk AR 15 PMAGS M2 – .223 / 5.56 NATO – MAG571...
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...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 -
Magpul Cerakote 30 Round PMAGs – FDE, ODG, and Pink Coated by AT3
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...3 Options -
RECOMMENDED
Armaspec Stealth Recoil Spring (SRS) for AR-15 and AR-10
Reduce Recoil, Wear, and Unwanted Rattling Armaspec's Stealth Recoil Spring™ is one of the best upgrades for your AR15 or AR10 recoil system, and you can feel and hear the...8 Options -
AT3™RECOMMENDED
AT3™ AR-15 Bolt Carrier Group (BCG) – 5.56 NATO/.300 Blackout – Black Nitride
AT3 Tactical is bringing you the best with this Top-Tier Black Nitride Bolt Carrier Group Getting a high quality bolt carrier group (BCG) that runs well in your rifle is... -
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 -
AT3™
AT3™ 1/2 Inch Crush Washer for .223/5.56 Muzzle Devices Compatible with AR 15
Time Your Muzzle Device with a Black Nitride Crush Washer from AT3 Crush washers are essential to replace after removing for replacing a muzzle device. Re-using crush washers can lead... -
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 -
Backup Tactical Rifle Thread Protector – Honeycomb – Black
Backup Tactical Honeycomb Rifle Thread Protectors Add sleek protection to your modern sporting rifle with Backup Tactical’s honeycomb thread caps. CNC machined from durable aluminum, these covers shield exposed muzzle...2 Options2 Options2 Options -
Ruger Mini-14 Tactical 5.56 NATO 16″ Rifle – 20 Rounds – Multiple Colors
Versatile 5.56 NATO Semi-Auto with Classic Reliability Ruger brings their legendary Garand-style action to the modern sporting rifle world with the Mini-14 Tactical. This rugged 5.56NATO/223Rem semi-automatic carbine is ready...2 Options2 Options2 Options -
Backup Tactical Rifle Thread Protector – Frag – Black
Tactical Thread Protectors - Backup Frag Caps When gearing up your modern sporting rifle or AR platform, finish strong with Backup Tactical’s iconic frag thread protectors. Precision CNC machined from...2 Options2 Options2 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 -
Armaspec Sound Mitigation Buffer (SMB) Captured Gen 3 – Multiple Buffer Weights Available
Improved & Easy-To-Install Captive Buffer Weights For AR Builds The Armaspec Sound Mitigation Buffer (SMB) Captured Gen 3 is a quick and easy replacement for your standard buffer and spring....6 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
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.