5.56 NATO is a widely used rifle cartridge developed for military and sporting applications, known for its reliability and versatility in AR-15 platforms. While not a manufacturer, many firearms companies produce 5.56 NATO specific parts, including barrels, upper receivers, bolt carrier groups, magazines, and complete rifles or build kits. These components are popular among shooters and builders seeking dependable, high performance solutions for tactical, sporting, and home defense use. If you need details on a specific manufacturer of 5.56 NATO parts, let me know!
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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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20″ 1×8 NATO Upper Assembled 15″ M-LOK – Black
Original price was: $329.00.$269.95Current price is: $269.95.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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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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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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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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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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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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10.5″ 5.56 AR-15 / M4 Upper with 10″ Quadrail No BCG or Charging Handle
Original price was: $369.95.$199.95Current price is: $199.95.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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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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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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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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7″ AR Upper 7 inch M-LOK Rail No BCG or Charging Handle
Original price was: $389.95.$195.95Current price is: $195.95.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
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16″ A2 Sight Tower M4 1×7 Carbine Upper No BCG or Charging Handle
Original price was: $329.95.$265.95Current price is: $265.95.In stock
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16″ Magpul Rifle Kit 15″ Keymod Assembled WITH 80% Lower
Original price was: $579.95.$399.95Current price is: $399.95.In stock
