Home / Forend & Handguard Parts / AR15 Discounts / Obsidian Arms 15C Handguard Slant-Cut M-LOK Black Hardcoat - 15"
Obsidian Arms 15C Handguard Slant-Cut M-LOK Black Hardcoat - 15"
Lowest Listed Price
$165
MSRP
$165
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Updated
Aug 26, 2026
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Specifications
Brand
MPN
OA-15C-HG-15-BLK
Description
Transform your AR-15 into a precision powerhouse with the Obsidian Arms 15C Handguard Slant-Cut M-LOK Black Hardcoat. This premium free-float handguard combines aggressive styling with unmatched functionality, delivering a sleek, modern look while enhancing accuracy and accessory mounting options. Crafted for tactical enthusiasts and competitive shooters, it addresses common frustrations like bulky rails and limited customization by offering a lightweight, modular design that keeps your setup balanced and responsive.Key Features Slant-Cut Design: The distinctive slant-cut front end provides an aggressive aesthetic and improved suppressor clearance, reducing weight without sacrificing strength. M-LOK Compatibility: Easily attach lights, grips, lasers, or bipods directly to the rail using the versatile M-LOK system, eliminating the need for bulky Picatinny adapters. Free-Float Construction: Isolates the barrel from external pressure, improving shot-to-shot consistency and overall rifle accuracy during high-stress scenarios. Durable Build: Machined from high-grade 6061-T6 aluminum with a MIL-SPEC black hardcoat anodized finish for corrosion resistance and long-lasting performance in harsh environments.Specifications Lengths Available: 15 inches or 17 inches to suit carbine, rifle, or competition builds. Weight: Approximately 12.1 oz (including steel barrel nut) for minimal added mass. Inner Diameter: 1.35 inches, compatible with standard low-profile gas blocks. Material: 6061-T6 aluminum with Type III hardcoat anodizing. Includes: Steel barrel nut and all necessary mounting hardware for straightforward installation.Why Choose the Obsidian Arms 15C Handguard?Unlike traditional quad rails that add unnecessary weight and snag clothing, this M-LOK slant-cut handguard solves key pain points for AR-15 owners seeking a balance of form and function. Its lightweight profile reduces fatigue during extended range sessions, while the free-float design minimizes barrel harmonics for tighter groupings. Customers rave about the easy installation-no special tools required-and the rock-solid fit that withstands recoil and rough handling. Whether you're building a custom defender or optimizing for 3-gun competitions, this handguard elevates your rifle's performance without breaking the bank on quality.Ready to upgrade? Secure the Obsidian Arms 15C Handguard today and experience the difference in modularity, durability, and precision that serious shooters demand.Frequently Asked QuestionsQ: Is the Obsidian Arms 15C Handguard compatible with my standard AR-15 upper receiver?A: Yes, it fits mil-spec AR-15 uppers and includes a steel barrel nut for secure, tool-free installation over low-profile gas blocks.Q: What makes the slant-cut design beneficial?A: The slant-cut enhances aesthetics, provides better clearance for muzzle devices or suppressors, and shaves off excess weight for a more agile rifle setup.Q: How easy is it to mount accessories on this M-LOK handguard?A: M-LOK slots allow direct, secure attachment of compatible accessories at any angle, offering more flexibility and less bulk than traditional rails.
