.223/5.56 refers to two closely related rifle cartridges—.223 Remington and 5.56 NATO—commonly used in AR-15 platforms. While not a manufacturer, many firearms companies produce .223/5.56-specific parts, including barrels, upper receivers, bolt carrier groups, magazines, and complete rifles or pistols. These components are popular for their versatility, reliability, and performance in target shooting, hunting, home defense, and tactical applications. If you need info on a specific manufacturer of .223/5.56 parts, let me know!
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Magpul PMAG 10 Round 5.56×45/.223 Magazine
Original price was: $18.95.$14.95Current price is: $14.95.In stock
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Aero Precision AR-15 Stripped Upper Receiver – Black
Original price was: $79.99.$63.99Current price is: $63.99.In stock
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16″ AR-15 Rifle Kit with 15″ Slim Keymod with 80% Lower Receiver – Titanium Blue
Original price was: $559.00.$419.95Current price is: $419.95.In stock
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Flat Dark Earth 16″ Kit 5.56 15″ Slim Keymod with Lower
Original price was: $559.00.$419.95Current price is: $419.95.In stock
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Tungsten Grey 16″ Rifle Kit 5.56 with 15″ Keymod with Lower
Original price was: $559.00.$419.95Current price is: $419.95.In stock
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AR-15 Rifle Kit complete with 12″ M-Lok Handguard 1×8 NO Lower – Black
Original price was: $499.95.$329.95Current price is: $329.95.In stock
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7.5″ 1×7 Pistol Upper 7 inch Keymod Rail No BCG or Charging Handle
Original price was: $359.95.$195.95Current price is: $195.95.In stock
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16″ AR-15 Rifle Kit with 15″ Slim Keymod with 80% Lower Receiver – Burnt Bronze
Original price was: $559.00.$419.95Current price is: $419.95.In stock
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16″ Flat Dark Earth Rifle Kit 5.56 with 12″ Keymod with Lower
Original price was: $559.00.$409.95Current price is: $409.95.In stock
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AR-15 Rifle Kit 15 inch Keymod 1 x 7 Upper Assembled NO 80% Lower
Original price was: $519.95.$279.95Current price is: $279.95.In stock
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7.5″ 5.56 1×7 Pistol Kit Upper Assembled with 80% Lower
Original price was: $459.00.$425.95Current price is: $425.95.In stock
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M16 Bolt Carrier Group Surplus Overflow
Original price was: $129.00.$65.95Current price is: $65.95.In stock
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16″ AR-15 Rifle Kit with 12″ Keymod with Lower – OD Green
Original price was: $559.00.$409.95Current price is: $409.95.In stock
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16″ 1×8 Carbine 15 inch M-LOK Rail No BCG or Charging Handle
Original price was: $389.95.$194.95Current price is: $194.95.In stock
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16′” AR-15 Rifle Kit with 12″ Slim Keymod with 80% Lower Receiver – Burnt Bronze
Original price was: $559.00.$409.95Current price is: $409.95.In stock
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7.5″ 5.56 Flat Dark Earth Pistol Kit with Lower
Original price was: $499.95.$359.95Current price is: $359.95.In stock
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10.5 inch Stainless Steel 5.56 Nato Barrel
Original price was: $119.00.$94.99Current price is: $94.99.In stock
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16″ Flat Dark Earth AR-15 Upper 15″ FDE Free Float Keymod with BCG and Charging Handle
Original price was: $359.99.$306.95Current price is: $306.95.In stock
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10.5 AR15 Pistol Kit 10″ Quadrail Upper Assembled With 80% Lower
Original price was: $449.95.$299.95Current price is: $299.95.In stock
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Aero Precision AR-15 Assembled Upper Receiver – Black
Original price was: $129.99.$93.49Current price is: $93.49.In stock
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Zombie Green 16″ Rifle Kit 5.56 15″ Slim Keymod with Lower
Original price was: $559.00.$419.95Current price is: $419.95.In stock
