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5.56 Caliber

Shop a Variety of Barrels, Muzzle Devices, Upper Receivers, Parts and more for your 5.56 Caliber AR-15

Arctic white M-LOK rail equipped 556 upper receiver for AR15.

AR-15 5.56 M-LOK Complete Upper (Arctic White)

Rated 4.67 out of 5

$649.95

Out of Stock

AR-15 10.5 Inch Upper Assembly with 10 Inch M-LOK and MCBS GEN2

Rated 5.00 out of 5

$649.95

Out of Stock

AR-15 10.5 Inch Upper Assembly with 10 Inch M-LOK and MCBS (Anodized Black)

Rated 5.00 out of 5

$599.95

Out of Stock

AR-15 5.56 Rifle Upper Set Arctic White Blaster

Rated 5.00 out of 5

$869.99

Out of Stock

AR-15 5.56 Rifle Upper Set “The Tiffany” in Light Blue MOD-0

Rated 5.00 out of 5

$799.99

Out of Stock

AR-15 Upper Receiver In 5.56 “Grunt Series” Mod-1

Rated 5.00 out of 5

$369.95

Out of Stock

AR-15 5.56 16" Upper With 12" Free Float Quad Rail And Mock Suppressor

AR-15 5.56 16 inch Upper with 12 inch Free Float Quad Rail and Mock Suppressor

Rated 4.67 out of 5

$549.95

Out of Stock

AR-15 5.56 Upper Receiver with USA Slim Profile 15 inch M-LOK (OD Green)

Rated 5.00 out of 5

$469.95

Out of Stock

AR-15 Pistol Upper 5.56 Arctic White Pistol Upper Set

Rated 5.00 out of 5

$599.95

Out of Stock

Sale!

AR-15 5.56 Custom Rifle Upper in Sniper Grey CLOSEOUT

Rated 4.50 out of 5

Original price was: $699.99.Current price is: $449.99.

Out of Stock

AR-15 300 BlackOut Upper With 12" Free Float Quad Rail And A2 Cage

AR-15 5.56 Upper With 12″ Free Float Quad Rail And A2 Cage

Rated 4.80 out of 5

$399.95

Out of Stock

AR15 pistol upper with a 7-inch black KeyMod handguard.

AR-15 Pistol Upper with 7 Inch KeyMod Handguard

Rated 4.50 out of 5

$299.99

Out of Stock

5.56 Caliber

AR-15 5.56 M-LOK Complete Upper (Arctic White)

AR-15 10.5 Inch Upper Assembly with 10 Inch M-LOK and MCBS GEN2

AR-15 10.5 Inch Upper Assembly with 10 Inch M-LOK and MCBS (Anodized Black)

AR-15 5.56 Rifle Upper Set Arctic White Blaster

AR-15 5.56 Rifle Upper Set “The Tiffany” in Light Blue MOD-0

AR-15 Upper Receiver In 5.56 “Grunt Series” Mod-1

AR-15 5.56 16 inch Upper with 12 inch Free Float Quad Rail and Mock Suppressor

AR-15 5.56 Upper Receiver with USA Slim Profile 15 inch M-LOK (OD Green)

AR-15 Pistol Upper 5.56 Arctic White Pistol Upper Set

AR-15 5.56 Custom Rifle Upper in Sniper Grey CLOSEOUT

AR-15 5.56 Upper With 12″ Free Float Quad Rail And A2 Cage

AR-15 Pistol Upper with 7 Inch KeyMod Handguard

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