Spike’s M4 upper receiver features premium 7075 T6 forged construction and flat-top design for optic mounting. Ready-to-build with forward assist and ejection door pre-installed.
The Spike’s M4 upper receiver flat-top is a premium forged upper assembly built for AR-15 builders. This upper combines aerospace-grade construction with practical features that save you time during assembly. Whether you’re building a precision rifle or upgrading your platform, this receiver delivers professional-grade reliability.
Premium Forged Construction Built to Last
Spike’s Tactical engineered this upper from mil-spec 7075 T6 aluminum forging. Furthermore, this aerospace-grade material resists wear and maintains tolerances under extreme conditions. The precision machining ensures perfect compatibility with all standard AR-15 components. You get mil-spec reliability in every dimension.
Ready-to-Build Design for Quick Assembly
This M4 upper receiver arrives fully assembled with critical features installed. The forward assist operates smoothly for reliable operation. Additionally, the ejection port door prevents debris from entering your action. Therefore, you can focus on completing your build quickly.
Flat-Top Platform for Any Optic System
The flat-top configuration provides a clean mounting platform for any optic or accessory. Moreover, it accepts standard AR-15 barrels and handguards without modifications. As a result, customization options are virtually unlimited. The black finish matches modern AR components seamlessly.
Ideal for Training, Competition, and Tactical Use
Whether you’re a competitive shooter, hunter, or sport shooter, this upper performs equally well. The Spike’s M4 upper receiver supports multi-platform versatility across different barrel calibers and configurations. First-time builders and experienced gunsmiths both choose Spike’s Tactical for proven durability and accuracy potential.
Ordering from Western Sport
Order online and it ships straight to your door. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.
Frequently Asked Questions
Q: Will this Spike’s M4 upper receiver fit my AR-15 lower?
A: Yes, this upper is fully compatible with standard mil-spec AR-15 lowers. The precision machining ensures a perfect fit and function with any quality lower receiver without modifications.
Q: What comes pre-installed on this upper receiver?
A: The forward assist and ejection port door arrive fully installed and ready to use. You will need to add a barrel, handguard, bolt carrier group, and charging handle to complete your build.
Q: Does Spike’s Tactical offer a warranty on this upper?
A: Yes, Spike’s Tactical backs all products with a lifetime warranty covering defects in materials and workmanship. Coverage applies under normal use conditions and demonstrates the manufacturer’s confidence in quality.
Reviews
There are no reviews yet.