Elevate your AR-15 build with the Obsidian Arms 15C2 Lightweight Billet Upper Receiver in sleek black. Crafted for enthusiasts who demand precision and performance without the extra weight, this upper receiver is the perfect foundation for a custom rifle that excels in speed and agility.
Key Features
- Ultra-Lightweight Design: At just 7.2 ounces, it shaves significant weight from your setup, enhancing maneuverability during extended range sessions or tactical drills.
- Premium Material Construction: Machined from high-strength 7075-T6 billet aluminum alloy for superior durability and resistance to wear.
- Hard Coat Anodized Finish: Mil-spec black anodizing (MIL-A-8625 Type III Class 2) provides corrosion resistance and a professional, low-glare appearance.
- Universal Compatibility: Works seamlessly with any standard AR-15 barrel and components, making integration straightforward for builders.
- Precision Engineering: CNC-machined for tight tolerances, ensuring reliable function and a flawless fit in your lower receiver.
Specifications
- Material: 7075-T6 Billet Aluminum
- Weight: 7.2 oz
- Finish: Black Hard Coat Anodized
- Compatibility: Standard AR-15 pattern
- Receiver Type: Stripped Upper (requires separate parts kit for assembly)
Why Choose the Obsidian Arms 15C2?
In the world of AR-15 accessories, weight is a critical factor for shooters seeking optimal balance and reduced fatigue. The 15C2 addresses this pain point head-on, offering a billet upper that’s lighter than many forged alternatives without sacrificing strength or reliability. Whether you’re building a lightweight competition rifle or a go-anywhere tactical platform, this receiver delivers the performance edge you need. Its robust construction handles high-round counts and harsh environments, while the clean, minimalist design appeals to those who appreciate form as much as function. Say goodbye to bulky setups and hello to a rifle that feels like an extension of your hand.
Ready to transform your AR-15? Invest in the Obsidian Arms 15C2 Lightweight Billet Upper Receiver today and experience the difference quality makes in every shot.
Frequently Asked Questions
1. Is the Obsidian Arms 15C2 compatible with standard AR-15 parts?
Yes, this upper receiver follows the standard AR-15 pattern, ensuring compatibility with most barrels, handguards, and bolt carrier groups.
2. What’s the difference between a billet and a forged upper receiver?
Billet uppers are machined from a solid block of aluminum, allowing for custom shapes and weight savings, while forged uppers are shaped through forging for high strength-to-weight ratios. Both are durable, but billet offers more design flexibility.
3. Does this upper come pre-assembled?
No, it’s a stripped receiver, so you’ll need an upper parts kit including the charging handle, forward assist (if desired), and dust cover for complete assembly.


