Product Description The Spike&';s Tactical complete upper assembly is built to arrive inspected, tested, and ready to drop in and run. This 5.56 NATO/.223 Rem complete upper features a forged flat-top upper receiver paired with a lightweight 14.5-inch mid-length barrel and a pinned Dynacomp muzzle brake for a 16-inch overall length. It is equipped with a 12-inch CRR quad rail for versatile accessory mounting and includes a phosphate-finished M16 complete bolt carrier group (BCG). Each complete upper is test fired for a function check before leaving Spike&';s facility. Product Highlights Complete, inspected and test-fired upper assembly ready for AR-style rifle builds Forged flat-top upper receiver for strength and optic-ready flexibility 14.5-inch lightweight mid-length barrel with pinned Dynacomp brake (16-inch overall length) 12-inch CRR quad rail provides ample Picatinny mounting space for lights, grips, and accessories Phosphate M16 complete bolt carrier group (BCG) included Specs Brand: Spike&';s Tactical Manufacturer Part Number: STU5050-CQ2D UPC: 810083260785 Platform Compatibility: Fits AR rifles Caliber: .223 Remington / 5.56 NATO Barrel Length: 14.5 in Overall Length: 16 in (with pinned muzzle brake) Gas System: Mid-length Upper Receiver: Forged, flat-top Handguard/Rail: 12 in CRR quad rail Muzzle Device: Dynacomp muzzle brake (pinned) BCG: Phosphate M16 complete bolt carrier group Sights: None Color: Black Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.