The Samson Tactical Accessory Rail System (STAR) for SIG 556 rifles is a free-float handguard designed to modernize your platform with integrated Picatinny rail real estate. This 3-hole configuration handguard is purpose-built for the SIG 556, 556 Classic, and 556R—giving you a clean, lightweight upgrade path without the need for gunsmithing. If you're running iron sights or planning to add optics, lights, lasers, or other 1913-standard accessories, this rail system transforms your platform into a fully modular rifle.
Built from aluminum and engineered as a two-piece, free-float design, the STAR handguard keeps the barrel free from contact with the foreend—a setup that eliminates harmonic interference and promotes consistent accuracy. Installation is straightforward: the modular construction means you can have this on your rifle without unnecessary complexity. The top rail spans 19 inches, giving you plenty of forward real estate for your sight setup and accessories. Three Picatinny rails at the 3, 6, and 9 o'clock positions mean you have mounting options at your fingertips—whether you're setting up for tactical work, range shooting, or hunting.
This package includes everything you need to start building: two 2-inch rail sections and one 4-inch rail section, all machined to mil-spec 1913 Picatinny standards. That flexibility lets you configure your rail coverage the way your rifle demands. Keep in mind this is the 3-hole version and won't fit the SIG 556 Xi, so verify your platform before ordering.
| Brand | Samson Manufacturing |
| Product Line | STAR (Samson Tactical Accessory Rail System) |
| Model | STAR-SIG-556-3H |
| Handguard Configuration | 3-Hole (for SIG 556) |
| Design | Free-float, two-piece |
| Material | Aluminum |
| Top Rail Length | 19 inches |
| Rail Standard | Mil-spec 1913 Picatinny |
| Rail Positions | 3, 6, and 9 o'clock |
| Included Rail Sections | Two 2" sections, one 4" section |
| Firearm Compatibility | SIG 556, SIG 556 Classic, SIG 556R (not SIG 556 Xi) |
This 3-hole STAR handguard is compatible with the SIG 556, SIG 556 Classic, and SIG 556R. It will not fit the SIG 556 Xi. Check your rifle's configuration before purchasing to ensure compatibility.
The package includes two 2-inch Picatinny rail sections and one 4-inch rail section, all machined to mil-spec 1913 standard. You can configure these across the 3, 6, and 9 o'clock positions to suit your accessory layout.
Yes. The three Picatinny rails at 3, 6, and 9 o'clock accept any standard 1913 Picatinny-mount accessories—optics, lights, laser modules, and more. The 19-inch top rail gives you plenty of room for your sight system and additional gear.
The two-piece free-float design is engineered for straightforward installation. While specific install steps aren't provided here, the modular construction avoids unnecessary complexity compared to many aftermarket handguards.
Samson Manufacturing
