CMMG Upper Receiver Assembly w/o Forward Assist - Armor Black - 55BA290‑AB

Discover the ultimate foundation for your custom AR-15 build with the CMMG Upper Receiver Assembly w/o Forward Assist in Armor Black. Crafted for precision and reliability, this slick-side upper receiver delivers a streamlined design that enthusiasts and builders demand, eliminating unnecessary components for a lighter, more authentic rifle experience. Perfect for those seeking a retro-inspired or minimalist setup, it combines high-quality materials with CMMG’s renowned engineering to ensure seamless compatibility and enduring performance.

Key Features

• Forged 7075-T6 Aluminum Construction: Provides exceptional strength and durability while keeping weight to a minimum at just 7 ounces, ideal for reducing overall rifle heft without sacrificing robustness.
• Slick-Side Design Without Forward Assist: Removes the forward assist for a cleaner profile, reducing potential failure points and offering the classic AR-15 aesthetic that many prefer for reliability in well-maintained firearms.
• ZEROED Polymer Dust Cover Pre-Installed: Factory-installed to protect the ejection port from debris, ensuring smooth operation and extended component life during field use.
• Enlarged Ejection Port: Accommodates a variety of calibers, including pistol options like 9mm and .45 ACP, for versatile build possibilities.
• Armor Black Cerakote Finish: Offers superior corrosion resistance and a sleek, matte appearance that withstands harsh environments and maintains its look over time.

Specifications

• Material: Forged 7075-T6 Aluminum
• Finish: Cerakote Armor Black
• Forward Assist: Not Included
• Port Door / Dust Cover: Factory Installed (ZEROED Polymer)
• T-Marks: Unmarked (Slick Side)
• Feed Ramps: None
• Dimensions: Length: 8 inches, Width: 1.3 inches, Height: 2.3 inches
• Weight: 7 ounces

Why Choose This Product

Building an AR-15 can be overwhelming with endless options, but the CMMG Upper Receiver Assembly addresses common pain points like excess weight and complexity head-on. By opting for a no-forward-assist design, you avoid the added bulk and potential jamming issues in dirty conditions—provided your rifle is properly maintained—while enjoying a more reliable, lightweight platform. This upper excels in custom builds where every ounce counts, whether for competition, hunting, or range days. Its mil-spec compatibility means it integrates effortlessly with standard AR-15 lowers, barrels, and handguards, saving you time and hassle during assembly. Elevate your firearm’s performance and aesthetics with a component trusted by builders for its precision machining and long-lasting finish.

Ready to assemble the AR-15 of your dreams? Secure this essential upper receiver and take your build to the next level with unmatched quality and simplicity.

Frequently Asked Questions

Q: Do I really need a forward assist on my AR-15 upper receiver?
A: Not necessarily—the original AR-15 design didn’t include one, and many modern builds thrive without it. It can help in rare cases of ammo or dirt-induced malfunctions, but proper maintenance often makes it redundant, offering a lighter and simpler rifle.

Q: Is this upper receiver compatible with my existing AR-15 parts?
A: Yes, this CMMG Mk4/AR15 upper is fully mil-spec compatible, allowing seamless integration with standard lowers, BCGs, and barrels for hassle-free customization.

Q: How does the Armor Black finish benefit my build?
A: The Cerakote Armor Black provides excellent scratch and corrosion resistance, ensuring your upper maintains its professional appearance even after rigorous use in various conditions.