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Spike's Tactical Complete Upper Receiver, .223 Rem / 5.56 NATO, 16" FN Hammer Forged Barrel, 1:7 Twist, Mid-Length Gas System, Front Sight Post, Black Finish
Model: STU5435-MLS / STU5435MLS
UPC: 815648023317
The Spike's Tactical Complete Upper Receiver identified by model numbers STU5435-MLS and STU5435MLS, with UPC 815648023317, is a firearm component assembly intended for use with compatible AR-pattern rifle configurations. This listing describes a complete upper chambered for .223 Remington and 5.56 NATO and includes a 16-inch FN hammer forged barrel with a 1:7 twist rate, a mid-length gas system, a front sight post, and a black finish.
This product is presented as a component or upper-style assembly for compatible firearm builds, replacement use, or maintenance-related configurations. The listed specifications identify the chambering, barrel length, barrel manufacturing reference, twist rate, gas system length, sight configuration, and finish. Users should confirm exact compatibility with their specific lower receiver, bolt carrier group, charging handle, and related parts configuration before purchase or installation.
The 16-inch barrel and mid-length gas system define key characteristics of the stated upper assembly, while the 1:7 twist rate identifies the rifling specification provided in the listing. The front sight post is included as part of the described configuration, and the black finish defines the exterior appearance of the assembly. Because firearm component fitment can vary by platform standard, manufacturer tolerances, and build configuration, buyers should review all product details carefully before relying on the assembly.
Installation, handling, possession, and use should follow the manufacturer’s instructions and all applicable federal, state, and local laws. Firearms and firearm components should always be handled safely, installed by qualified individuals where appropriate, and stored securely away from unauthorized users.
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