Strike Industries M4 Quad Rail Handguard SI-M4-HG-BK (also known as the Strike M4 Quad Rail Handguard in Black).
This is a classic full quad Picatinny rail handguard from Strike Industries, designed as a direct drop-in replacement for standard carbine-length AR-15/M4 uppers with delta ring and direct impingement gas systems. It brings back the traditional "quad rail" look while offering a lightweight, durable aluminum construction and a patent-pending mounting system for easy installation and removal without permanent modifications.
Key Features & Specs
- Rail Configuration: Full quad Picatinny rails (Mil-Spec standard) at the 3, 6, 9, and 12 o'clock positions — ideal for mounting lights, lasers, foregrips, bipods, or other accessories.
- Material: Aerospace-grade aluminum for a great balance of lightweight durability and strength.
- Length: 8.49 inches (provides substantial rail space while maintaining a compact carbine profile).
- Dimensions: Width 2.20", Height 2.38".
- Weight: 11.6 oz (light for a full quad rail setup).
- Mounting System: Patent-pending easy drop-in design that works with the factory delta ring and front barrel clamp. Includes hardware (T27 and T20 L-wrenches, Loctite, and front barrel clamp).
- Additional Features: Two QD sling sockets at the rear for quick sling attachment. Stylish, modern design with clean lines.
- Compatibility: AR/M4 carbine-length direct impingement gas systems. Not intended for mid-length or rifle-length gas systems without modification.
The SI-M4-HG-BK revives the classic quad rail aesthetic that many shooters still prefer for maximum accessory mounting flexibility. It installs quickly and provides a solid platform without the added weight or heat retention of some older quad rails.
Who It's For
- AR-15 builders who want a traditional full-quad rail look for lights, grips, and other accessories.
- Users upgrading a carbine-length M4-style rifle while keeping the delta ring assembly.
- Shooters who prefer the proven Picatinny system over M-LOK or KeyMod for certain setups.
