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AR-15 Barrels in 5.7x28mm

Check out the latest in pistol caliber carbines with these barrels chambered for the high-velocity 5.7x28mm round. This is the same caliber as the FN P90 submachine gun and FiveSeven pistol.

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CMMG AR-15 Barrel & BCG Kit – 16.1″ – 5.7x28mm – Radial Delayed Blowback

NEW

CMMG AR-15 Barrel & BCG Kit – 8″ – 5.7x28mm – Radial Delayed Blowback

NEW

CMMG AR-15 Barrel & BCG Kit – 5″ – 5.7x28mm – Radial Delayed Blowback