.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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AT3™St. Patty's Sale
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... -
AT3™RECOMMENDEDSt. Patty's Sale
AT3™ AR-15 3-Port Muzzle Brake with Crush Washer – 1/2×28 Thread for .223/5.56
Extreme Recoil Reduction at an Affordable Price Taming the recoil of 5.56 tends to be a pretty easy feat - but this muzzle device all but eliminates recoil with an... -
AT3™St. Patty's Sale
AT3™ AR-15 A2 Mil-Spec Flash Hider with Crush Washer
High Quality Muzzle Device: Classic AR-15 Mil-Spec Flash Hider with Five-port "birdcage" Design Limits muzzle flash for effective use in all light conditions. Includes crush washer Machined steel with phosphate... -
St. Patty's Sale
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... -
St. Patty's Sale
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... -
St. Patty's Sale
Strike Industries JCOMP Gen 2 for .223/5.56 Rifles – 1/2×28
Re-engineered Hybrid Muzzle Device For .223/5.56 Platforms The Strike Industries JCOMP Gen 2 is the re-engineered and updated version of the SI JCOMP. This device provides impressive reduction to both... -
AT3™St. Patty's Sale
AT3™ AR-15 Replacement Bolt – 5.56 NATO/.300 Blackout – Black Nitride
AT3 Replacement AR-15 Bolt This AR-15 replacement bolt from AT3 Tactical easily replaces a broken bolt in your rifle. This bolt comes complete with extractor and ejector assemblies already installed... -
St. Patty's Sale
Magpul PMAG M3 10/30 Round – .223/5.56 – MAG1183 for AR 15
Full Body 10-Round Magazine To Utilize Training & Gear Compatibility For Restricted Areas The Magpul PMAG M3 10/30 Round - MAG1183 is a 10-round polymer magazine with a 30-round full-size... -
RECOMMENDEDSt. Patty's Sale
KAK Industry K-SPEC Downward Venting 5.56 BCG with Dual Ejector Bolt
KAK Industry K-SPEC Downward Venting 5.56 BCG with Dual Ejector Bolt The K-SPEC Enhanced AR15 BCG is a high-quality bolt carrier group designed for use with both 5.56 and 300... -
AT3™St. Patty's Sale
AT3™ AR-15 Bolt Carrier Group – 5.56 NATO/.300 Blackout – Nickel Boron
Get the Performance You Need with a Nickel Boron Bolt Carrier Group Whether you're starting a fresh build or upgrading from stock, a bolt carrier group that performs reliably is... -
St. Patty's Sale
Magpul Magazine Dust Cover – 3 Pack – For GEN M2 MOE .223 /...
Keep Your Magazines Free From Dirt And Dust! The Magpul Magazine Dust Cover is a great addition to your magazines to minimize debris intrusion and minimize potential cartridge damage during... -
St. Patty's Sale
6-Pack – Magpul PMAG M3 10 Round AR 15 Magazine .223 / 5.56 NATO...
Buy in Bulk And Save! This Pack Includes Six (6) M3 10-Round Pmags This Magpul PMAG M3 is a 10-round magazine designed for the AR15/M4 platforms chambered in 5.56x45 NATO... -
St. Patty's Sale
3-Pack – Magpul PMAG 30-Round M2 MOE Window Mag – .223 / 5.56 NATO...
Buy in Bulk And Save! This Pack Includes Three(3) M2 MOE 30-Round Window Pmags The PMAG 30 Round M2 MOE Window Mag is a cost-competitive upgrade from the aluminum USGI... -
AT3™St. Patty's Sale
AT3 Tactical™ AR-15 Compensator with Crush Washer – 1/2×28 Thread
Tactical Compensator that Prevents Dust Signature While Prone To help tame muzzle rise, a compensator is a great choice for staying on-target. This Tactical Compensator for your AR-15 is designed... -
St. Patty's Sale
3-Pack – Magpul PMAG M3 20 Round AR 15 Magazine .223 / 5.56 NATO...
Buy In Bulk And Save! This Pack Includes Three (3) M3 20-Round Pmags The Magpul PMAG Gen M3 20 is a next-generation 20-round polymer magazine chambered in 5.56x45 NATO (.223... -
St. Patty's Sale
UTG Pro 12″ AR-15 Drop-in Quad Rail – Extended Carbine Length
UTG Pro 12" AR-15 Drop-in Quad Rail - Extended Carbine Length Fits AR-15 Carbines - extends rail past front sight Aircraft Aluminum Extrusion with Integral Spinal Cords for Alignment Picatinny... -
AT3™St. Patty's Sale
AT3™ .223/5.56 Combat Flash Hider – AR15
Aggressive Design and Excellent Flash Reduction In the midst of combat, the importance of a good flash hider can't be overstated. What you want is something that controls the rise... -
St. Patty's Sale
Maglula Magazine Loader and Unloader Gen 2 – AR-15 223 Remington 5.56x45mm
Save Time & Hassle With The Maglula Magazine Loader/Unloader – .223/5.56 Rem Since 2001, Maglula has manufactured professional military-grade tools for loading and unloading magazines. These products save valuable time... -
St. Patty's Sale
Magpul PMAG M3 20 Round AR 15 Magazine .223 / 5.56 NATO Black –...
100% Tough, Durable and Reliable - Great Addition to Your Build The Magpul PMAG Gen M3 20 is a next-generation 20-round polymer magazine chambered in 5.56x45 NATO (.223 Remington) for... -
St. Patty's Sale
Magpul Ranger Plate Magazine Floorplate 3 pack Black PMAG M3 – .223 / 5.56...
3-Pack Of Reliable Protection For Your Magazines The Magpul Ranger Plate Magazine Floorplate M3 is a top-notch upgrade for your USGI magazines compatible with the 5.56x45 PMAG AR/M4 GEN M3... -
St. Patty's Sale
6-Pack – Magpul PMAG 30-Round M2 MOE Window Mag – .223 / 5.56 NATO...
Buy in Bulk And Save! This Pack Includes Six (6) M2 MOE 30-Round Window Pmags The PMAG 30 Round M2 MOE Window Mag is a cost-competitive upgrade from the aluminum... -
AT3™St. Patty's Sale
AT3™ 5.56 NATO Government Profile 16 Inch AR-15 Barrel
16 Inch Government 5.56 NATO Barrel by AT3 Tactical With a sturdy profile and proven construction, this 16 inch 5.56 NATO barrel features a midlength gas system for smoother recoil....$125.00Only$106.25 -
St. Patty's Sale
3-Pack – UTG 30 Round 5.56 NATO Windowed Polymer AR 15 Magazine
Buy in Bulk And Save! This Pack Includes Three (3) UTG 30 Round 5.56 Windowed Polymer Magazine! The UTG 30 Round 5.56 NATO Windowed Polymer Magazine is a lightweight and... -
St. Patty's Sale
Mission First Tactical 6 Direction AR 15 Compensator for .223/5.56
Efficiently Disperse Recoil and Mitigate Muzzle Rise Disperses muzzle blast in 6 distinct directions - forward of the muzzle, plus ports on 5 sides. This feature aids in wide gas...
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.