Description
Spike's Tactical 16" 5.56 NATO Complete Upper with 9" BAR2 Quad Rail
Upgrade your AR-15 build with the duty-ready performance of the Spike's Tactical M4 16" 5.56 NATO Complete Upper (MPN: STU5025R9S). Originally engineered to meet the stringent, mil-spec compliance demands of law enforcement, this complete upper receiver groups premium reliability and tack-driving accuracy into an affordable package for any civilian shooter or duty professional.
At the heart of this upper is a 16-inch Chrome Moly barrel featuring a 1:7 twist rate, optimal for stabilizing a wide range of heavy and defensive 5.56x45mm NATO ammunition. Built around a reliable carbine-length gas system and a .750" micro gas block, it delivers smooth cycling and reduced wear under high volume firing.
Enclosing the barrel is the premium 9" BAR2 Free-Float Quad Rail System. The BAR2 rail offers an incredibly robust, continuous picatinny top rail and full-length quad rails, providing maximum real estate for your favorite optics, lights, foregrips, and laser systems while ensuring your barrel stays completely free-floating for peak accuracy.
This upper comes completely assembled and includes a Spike’s Tactical Mil-Spec M16 Bolt Carrier Group (BCG) and a standard A2 flash hider, making it truly drop-in ready for any standard AR-15 lower receiver.
Key Features
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Mil-Spec Compliance: Built to law enforcement standards, ensuring top-tier reliability under harsh conditions.
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Drop-In Ready: Includes a factory-tested M16 bolt carrier group and charging handle so you can pin it to your lower and head straight to the range.
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BAR2 Quad Rail: Offers maximum rigid accessory mounting space and superior heat dissipation.
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Chrome Moly Barrel: Engineered for a long service life and consistent accuracy.
